Mercurial > hg > nginx
annotate src/mail/ngx_mail_pop3_module.c @ 5989:ec01b1d1fff1
Mail: client SSL certificates support.
The "ssl_verify_client", "ssl_verify_depth", "ssl_client_certificate",
"ssl_trusted_certificate", and "ssl_crl" directives introduced to control
SSL client certificate verification in mail proxy module.
If there is a certificate, detail of the certificate are passed to
the auth_http script configured via Auth-SSL-Verify, Auth-SSL-Subject,
Auth-SSL-Issuer, Auth-SSL-Serial, Auth-SSL-Fingerprint headers. If
the auth_http_pass_client_cert directive is set, client certificate
in PEM format will be passed in the Auth-SSL-Cert header (urlencoded).
If there is no required certificate provided during an SSL handshake
or certificate verification fails then a protocol-specific error is
returned after the SSL handshake and the connection is closed.
Based on previous work by Sven Peter, Franck Levionnois and Filipe Da Silva.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Wed, 25 Feb 2015 17:48:05 +0300 |
| parents | d620f497c50f |
| children | 73b451d304c0 |
| rev | line source |
|---|---|
| 521 | 1 |
| 2 /* | |
| 3 * Copyright (C) Igor Sysoev | |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
| 521 | 5 */ |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_event.h> | |
| 1136 | 11 #include <ngx_mail.h> |
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12 #include <ngx_mail_pop3_module.h> |
| 521 | 13 |
| 14 | |
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15 static void *ngx_mail_pop3_create_srv_conf(ngx_conf_t *cf); |
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16 static char *ngx_mail_pop3_merge_srv_conf(ngx_conf_t *cf, void *parent, |
| 521 | 17 void *child); |
| 18 | |
| 19 | |
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20 static ngx_str_t ngx_mail_pop3_default_capabilities[] = { |
| 527 | 21 ngx_string("TOP"), |
| 22 ngx_string("USER"), | |
| 23 ngx_string("UIDL"), | |
| 24 ngx_null_string | |
| 25 }; | |
| 26 | |
| 27 | |
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28 static ngx_conf_bitmask_t ngx_mail_pop3_auth_methods[] = { |
| 1136 | 29 { ngx_string("plain"), NGX_MAIL_AUTH_PLAIN_ENABLED }, |
| 30 { ngx_string("apop"), NGX_MAIL_AUTH_APOP_ENABLED }, | |
| 31 { ngx_string("cram-md5"), NGX_MAIL_AUTH_CRAM_MD5_ENABLED }, | |
| 800 | 32 { ngx_null_string, 0 } |
| 33 }; | |
| 34 | |
| 35 | |
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36 static ngx_str_t ngx_mail_pop3_auth_plain_capability = |
| 809 | 37 ngx_string("+OK methods supported:" CRLF |
| 38 "LOGIN" CRLF | |
| 39 "PLAIN" CRLF | |
| 40 "." CRLF); | |
| 41 | |
| 42 | |
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43 static ngx_str_t ngx_mail_pop3_auth_cram_md5_capability = |
| 809 | 44 ngx_string("+OK methods supported:" CRLF |
| 45 "LOGIN" CRLF | |
| 46 "PLAIN" CRLF | |
| 47 "CRAM-MD5" CRLF | |
| 48 "." CRLF); | |
| 49 | |
| 50 | |
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51 static ngx_mail_protocol_t ngx_mail_pop3_protocol = { |
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52 ngx_string("pop3"), |
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53 { 110, 995, 0, 0 }, |
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54 NGX_MAIL_POP3_PROTOCOL, |
| 521 | 55 |
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56 ngx_mail_pop3_init_session, |
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57 ngx_mail_pop3_init_protocol, |
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58 ngx_mail_pop3_parse_command, |
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59 ngx_mail_pop3_auth_state, |
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60 |
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61 ngx_string("-ERR internal server error" CRLF), |
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62 ngx_string("-ERR SSL certificate error" CRLF), |
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63 ngx_string("-ERR No required SSL certificate" CRLF) |
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64 }; |
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65 |
| 587 | 66 |
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67 static ngx_command_t ngx_mail_pop3_commands[] = { |
| 521 | 68 |
| 527 | 69 { ngx_string("pop3_capabilities"), |
| 1136 | 70 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, |
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71 ngx_mail_capabilities, |
| 1136 | 72 NGX_MAIL_SRV_CONF_OFFSET, |
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73 offsetof(ngx_mail_pop3_srv_conf_t, capabilities), |
| 527 | 74 NULL }, |
| 75 | |
| 1136 | 76 { ngx_string("pop3_auth"), |
| 77 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
| 800 | 78 ngx_conf_set_bitmask_slot, |
| 1136 | 79 NGX_MAIL_SRV_CONF_OFFSET, |
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80 offsetof(ngx_mail_pop3_srv_conf_t, auth_methods), |
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81 &ngx_mail_pop3_auth_methods }, |
| 800 | 82 |
| 521 | 83 ngx_null_command |
| 84 }; | |
| 85 | |
| 86 | |
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87 static ngx_mail_module_t ngx_mail_pop3_module_ctx = { |
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88 &ngx_mail_pop3_protocol, /* protocol */ |
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89 |
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90 NULL, /* create main configuration */ |
| 521 | 91 NULL, /* init main configuration */ |
| 92 | |
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93 ngx_mail_pop3_create_srv_conf, /* create server configuration */ |
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94 ngx_mail_pop3_merge_srv_conf /* merge server configuration */ |
| 521 | 95 }; |
| 96 | |
| 97 | |
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98 ngx_module_t ngx_mail_pop3_module = { |
| 521 | 99 NGX_MODULE_V1, |
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100 &ngx_mail_pop3_module_ctx, /* module context */ |
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101 ngx_mail_pop3_commands, /* module directives */ |
| 1136 | 102 NGX_MAIL_MODULE, /* module type */ |
| 541 | 103 NULL, /* init master */ |
| 521 | 104 NULL, /* init module */ |
| 541 | 105 NULL, /* init process */ |
| 106 NULL, /* init thread */ | |
| 107 NULL, /* exit thread */ | |
| 108 NULL, /* exit process */ | |
| 109 NULL, /* exit master */ | |
| 110 NGX_MODULE_V1_PADDING | |
| 521 | 111 }; |
| 112 | |
| 113 | |
| 114 static void * | |
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115 ngx_mail_pop3_create_srv_conf(ngx_conf_t *cf) |
| 577 | 116 { |
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117 ngx_mail_pop3_srv_conf_t *pscf; |
| 641 | 118 |
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119 pscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_pop3_srv_conf_t)); |
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120 if (pscf == NULL) { |
| 527 | 121 return NULL; |
| 521 | 122 } |
| 123 | |
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124 if (ngx_array_init(&pscf->capabilities, cf->pool, 4, sizeof(ngx_str_t)) |
| 1136 | 125 != NGX_OK) |
| 126 { | |
| 127 return NULL; | |
| 128 } | |
| 129 | |
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130 return pscf; |
| 521 | 131 } |
| 132 | |
| 133 | |
| 134 static char * | |
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135 ngx_mail_pop3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) |
| 521 | 136 { |
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137 ngx_mail_pop3_srv_conf_t *prev = parent; |
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138 ngx_mail_pop3_srv_conf_t *conf = child; |
| 521 | 139 |
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140 u_char *p; |
| 1136 | 141 size_t size, stls_only_size; |
| 527 | 142 ngx_str_t *c, *d; |
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143 ngx_uint_t i; |
| 1136 | 144 |
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145 ngx_conf_merge_bitmask_value(conf->auth_methods, |
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146 prev->auth_methods, |
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147 (NGX_CONF_BITMASK_SET |
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148 |NGX_MAIL_AUTH_PLAIN_ENABLED)); |
| 800 | 149 |
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150 if (conf->capabilities.nelts == 0) { |
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151 conf->capabilities = prev->capabilities; |
| 800 | 152 } |
| 153 | |
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154 if (conf->capabilities.nelts == 0) { |
| 527 | 155 |
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156 for (d = ngx_mail_pop3_default_capabilities; d->len; d++) { |
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157 c = ngx_array_push(&conf->capabilities); |
| 527 | 158 if (c == NULL) { |
| 159 return NGX_CONF_ERROR; | |
| 160 } | |
| 161 | |
| 162 *c = *d; | |
| 163 } | |
| 164 } | |
| 165 | |
| 166 size = sizeof("+OK Capability list follows" CRLF) - 1 | |
| 167 + sizeof("." CRLF) - 1; | |
| 168 | |
| 1136 | 169 stls_only_size = size + sizeof("STLS" CRLF) - 1; |
| 170 | |
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171 c = conf->capabilities.elts; |
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172 for (i = 0; i < conf->capabilities.nelts; i++) { |
| 527 | 173 size += c[i].len + sizeof(CRLF) - 1; |
| 1136 | 174 |
| 175 if (ngx_strcasecmp(c[i].data, (u_char *) "USER") == 0) { | |
| 176 continue; | |
| 177 } | |
| 178 | |
| 179 stls_only_size += c[i].len + sizeof(CRLF) - 1; | |
| 527 | 180 } |
| 181 | |
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182 if (conf->auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED) { |
| 809 | 183 size += sizeof("SASL LOGIN PLAIN CRAM-MD5" CRLF) - 1; |
| 184 | |
| 185 } else { | |
| 186 size += sizeof("SASL LOGIN PLAIN" CRLF) - 1; | |
| 187 } | |
| 188 | |
| 2049 | 189 p = ngx_pnalloc(cf->pool, size); |
| 583 | 190 if (p == NULL) { |
| 527 | 191 return NGX_CONF_ERROR; |
| 192 } | |
| 193 | |
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194 conf->capability.len = size; |
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195 conf->capability.data = p; |
| 583 | 196 |
| 197 p = ngx_cpymem(p, "+OK Capability list follows" CRLF, | |
| 198 sizeof("+OK Capability list follows" CRLF) - 1); | |
| 527 | 199 |
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200 for (i = 0; i < conf->capabilities.nelts; i++) { |
| 583 | 201 p = ngx_cpymem(p, c[i].data, c[i].len); |
| 202 *p++ = CR; *p++ = LF; | |
| 527 | 203 } |
| 204 | |
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ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
205 if (conf->auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED) { |
| 809 | 206 p = ngx_cpymem(p, "SASL LOGIN PLAIN CRAM-MD5" CRLF, |
| 207 sizeof("SASL LOGIN PLAIN CRAM-MD5" CRLF) - 1); | |
| 208 | |
| 209 } else { | |
| 210 p = ngx_cpymem(p, "SASL LOGIN PLAIN" CRLF, | |
| 211 sizeof("SASL LOGIN PLAIN" CRLF) - 1); | |
| 212 } | |
| 213 | |
| 583 | 214 *p++ = '.'; *p++ = CR; *p = LF; |
| 215 | |
| 216 | |
| 217 size += sizeof("STLS" CRLF) - 1; | |
| 527 | 218 |
| 2049 | 219 p = ngx_pnalloc(cf->pool, size); |
| 583 | 220 if (p == NULL) { |
| 221 return NGX_CONF_ERROR; | |
| 222 } | |
| 223 | |
|
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
224 conf->starttls_capability.len = size; |
|
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
225 conf->starttls_capability.data = p; |
| 583 | 226 |
|
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
227 p = ngx_cpymem(p, conf->capability.data, |
|
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
228 conf->capability.len - (sizeof("." CRLF) - 1)); |
| 583 | 229 |
| 230 p = ngx_cpymem(p, "STLS" CRLF, sizeof("STLS" CRLF) - 1); | |
| 231 *p++ = '.'; *p++ = CR; *p = LF; | |
| 527 | 232 |
| 233 | |
|
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
234 if (conf->auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED) { |
|
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
235 conf->auth_capability = ngx_mail_pop3_auth_cram_md5_capability; |
| 809 | 236 |
| 237 } else { | |
|
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
238 conf->auth_capability = ngx_mail_pop3_auth_plain_capability; |
| 809 | 239 } |
| 240 | |
| 241 | |
| 2049 | 242 p = ngx_pnalloc(cf->pool, stls_only_size); |
| 1136 | 243 if (p == NULL) { |
| 244 return NGX_CONF_ERROR; | |
| 245 } | |
| 246 | |
|
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
247 conf->starttls_only_capability.len = stls_only_size; |
|
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
248 conf->starttls_only_capability.data = p; |
| 1136 | 249 |
| 250 p = ngx_cpymem(p, "+OK Capability list follows" CRLF, | |
| 251 sizeof("+OK Capability list follows" CRLF) - 1); | |
| 252 | |
|
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
253 for (i = 0; i < conf->capabilities.nelts; i++) { |
| 1136 | 254 if (ngx_strcasecmp(c[i].data, (u_char *) "USER") == 0) { |
| 255 continue; | |
| 256 } | |
| 257 | |
| 258 p = ngx_cpymem(p, c[i].data, c[i].len); | |
| 259 *p++ = CR; *p++ = LF; | |
| 260 } | |
| 261 | |
| 262 p = ngx_cpymem(p, "STLS" CRLF, sizeof("STLS" CRLF) - 1); | |
| 263 *p++ = '.'; *p++ = CR; *p = LF; | |
| 264 | |
| 521 | 265 return NGX_CONF_OK; |
| 266 } |