Mercurial > hg > nginx
annotate src/mail/ngx_mail_imap_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 | bcb107bb89cd |
| 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_imap_module.h> |
| 521 | 13 |
| 14 | |
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15 static void *ngx_mail_imap_create_srv_conf(ngx_conf_t *cf); |
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16 static char *ngx_mail_imap_merge_srv_conf(ngx_conf_t *cf, void *parent, |
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17 void *child); |
| 521 | 18 |
| 19 | |
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20 static ngx_str_t ngx_mail_imap_default_capabilities[] = { |
| 527 | 21 ngx_string("IMAP4"), |
| 22 ngx_string("IMAP4rev1"), | |
| 23 ngx_string("UIDPLUS"), | |
| 24 ngx_null_string | |
| 25 }; | |
| 26 | |
| 27 | |
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28 static ngx_conf_bitmask_t ngx_mail_imap_auth_methods[] = { |
| 1323 | 29 { ngx_string("plain"), NGX_MAIL_AUTH_PLAIN_ENABLED }, |
| 30 { ngx_string("login"), NGX_MAIL_AUTH_LOGIN_ENABLED }, | |
| 31 { ngx_string("cram-md5"), NGX_MAIL_AUTH_CRAM_MD5_ENABLED }, | |
| 32 { ngx_null_string, 0 } | |
| 33 }; | |
| 34 | |
| 35 | |
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36 static ngx_str_t ngx_mail_imap_auth_methods_names[] = { |
| 1323 | 37 ngx_string("AUTH=PLAIN"), |
| 38 ngx_string("AUTH=LOGIN"), | |
| 39 ngx_null_string, /* APOP */ | |
| 2309 | 40 ngx_string("AUTH=CRAM-MD5"), |
| 41 ngx_null_string /* NONE */ | |
| 1323 | 42 }; |
| 43 | |
| 44 | |
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45 static ngx_mail_protocol_t ngx_mail_imap_protocol = { |
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46 ngx_string("imap"), |
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47 { 143, 993, 0, 0 }, |
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48 NGX_MAIL_IMAP_PROTOCOL, |
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49 |
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50 ngx_mail_imap_init_session, |
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51 ngx_mail_imap_init_protocol, |
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52 ngx_mail_imap_parse_command, |
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53 ngx_mail_imap_auth_state, |
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54 |
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55 ngx_string("* BAD internal server error" CRLF), |
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56 ngx_string("* BYE SSL certificate error" CRLF), |
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57 ngx_string("* BYE No required SSL certificate" CRLF) |
| 1136 | 58 }; |
| 59 | |
| 60 | |
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61 static ngx_command_t ngx_mail_imap_commands[] = { |
| 521 | 62 |
| 63 { ngx_string("imap_client_buffer"), | |
| 1136 | 64 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
| 521 | 65 ngx_conf_set_size_slot, |
| 1136 | 66 NGX_MAIL_SRV_CONF_OFFSET, |
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67 offsetof(ngx_mail_imap_srv_conf_t, client_buffer_size), |
| 527 | 68 NULL }, |
| 69 | |
| 70 { ngx_string("imap_capabilities"), | |
| 1136 | 71 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, |
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72 ngx_mail_capabilities, |
| 1136 | 73 NGX_MAIL_SRV_CONF_OFFSET, |
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74 offsetof(ngx_mail_imap_srv_conf_t, capabilities), |
| 800 | 75 NULL }, |
| 76 | |
| 1323 | 77 { ngx_string("imap_auth"), |
| 78 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
| 79 ngx_conf_set_bitmask_slot, | |
| 80 NGX_MAIL_SRV_CONF_OFFSET, | |
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81 offsetof(ngx_mail_imap_srv_conf_t, auth_methods), |
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82 &ngx_mail_imap_auth_methods }, |
| 800 | 83 |
| 521 | 84 ngx_null_command |
| 85 }; | |
| 86 | |
| 87 | |
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88 static ngx_mail_module_t ngx_mail_imap_module_ctx = { |
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89 &ngx_mail_imap_protocol, /* protocol */ |
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90 |
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91 NULL, /* create main configuration */ |
| 521 | 92 NULL, /* init main configuration */ |
| 93 | |
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94 ngx_mail_imap_create_srv_conf, /* create server configuration */ |
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95 ngx_mail_imap_merge_srv_conf /* merge server configuration */ |
| 521 | 96 }; |
| 97 | |
| 98 | |
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99 ngx_module_t ngx_mail_imap_module = { |
| 521 | 100 NGX_MODULE_V1, |
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101 &ngx_mail_imap_module_ctx, /* module context */ |
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102 ngx_mail_imap_commands, /* module directives */ |
| 1136 | 103 NGX_MAIL_MODULE, /* module type */ |
| 541 | 104 NULL, /* init master */ |
| 521 | 105 NULL, /* init module */ |
| 541 | 106 NULL, /* init process */ |
| 107 NULL, /* init thread */ | |
| 108 NULL, /* exit thread */ | |
| 109 NULL, /* exit process */ | |
| 110 NULL, /* exit master */ | |
| 111 NGX_MODULE_V1_PADDING | |
| 521 | 112 }; |
| 113 | |
| 114 | |
| 115 static void * | |
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116 ngx_mail_imap_create_srv_conf(ngx_conf_t *cf) |
| 577 | 117 { |
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118 ngx_mail_imap_srv_conf_t *iscf; |
| 641 | 119 |
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120 iscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_imap_srv_conf_t)); |
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121 if (iscf == NULL) { |
| 527 | 122 return NULL; |
| 521 | 123 } |
| 124 | |
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125 iscf->client_buffer_size = NGX_CONF_UNSET_SIZE; |
| 521 | 126 |
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127 if (ngx_array_init(&iscf->capabilities, cf->pool, 4, sizeof(ngx_str_t)) |
| 1136 | 128 != NGX_OK) |
| 129 { | |
| 130 return NULL; | |
| 131 } | |
| 132 | |
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133 return iscf; |
| 521 | 134 } |
| 135 | |
| 136 | |
| 137 static char * | |
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138 ngx_mail_imap_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) |
| 521 | 139 { |
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140 ngx_mail_imap_srv_conf_t *prev = parent; |
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141 ngx_mail_imap_srv_conf_t *conf = child; |
| 521 | 142 |
| 1322 | 143 u_char *p, *auth; |
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144 size_t size; |
| 527 | 145 ngx_str_t *c, *d; |
| 1136 | 146 ngx_uint_t i, m; |
| 527 | 147 |
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148 ngx_conf_merge_size_value(conf->client_buffer_size, |
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149 prev->client_buffer_size, |
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150 (size_t) ngx_pagesize); |
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151 |
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152 ngx_conf_merge_bitmask_value(conf->auth_methods, |
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153 prev->auth_methods, |
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154 (NGX_CONF_BITMASK_SET |
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155 |NGX_MAIL_AUTH_PLAIN_ENABLED)); |
| 1323 | 156 |
| 800 | 157 |
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158 if (conf->capabilities.nelts == 0) { |
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159 conf->capabilities = prev->capabilities; |
| 527 | 160 } |
| 161 | |
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162 if (conf->capabilities.nelts == 0) { |
| 527 | 163 |
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164 for (d = ngx_mail_imap_default_capabilities; d->len; d++) { |
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165 c = ngx_array_push(&conf->capabilities); |
| 527 | 166 if (c == NULL) { |
| 167 return NGX_CONF_ERROR; | |
| 168 } | |
| 169 | |
| 170 *c = *d; | |
| 171 } | |
| 172 } | |
| 173 | |
| 1136 | 174 size = sizeof("* CAPABILITY" CRLF) - 1; |
| 527 | 175 |
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176 c = conf->capabilities.elts; |
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177 for (i = 0; i < conf->capabilities.nelts; i++) { |
| 527 | 178 size += 1 + c[i].len; |
| 179 } | |
| 180 | |
| 1323 | 181 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
| 182 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; | |
| 183 m <<= 1, i++) | |
| 184 { | |
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185 if (m & conf->auth_methods) { |
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186 size += 1 + ngx_mail_imap_auth_methods_names[i].len; |
| 1323 | 187 } |
| 188 } | |
| 189 | |
| 2049 | 190 p = ngx_pnalloc(cf->pool, size); |
| 583 | 191 if (p == NULL) { |
| 192 return NGX_CONF_ERROR; | |
| 193 } | |
| 194 | |
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Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
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195 conf->capability.len = size; |
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f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
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196 conf->capability.data = p; |
| 583 | 197 |
| 198 p = ngx_cpymem(p, "* CAPABILITY", sizeof("* CAPABILITY") - 1); | |
| 199 | |
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f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
200 for (i = 0; i < conf->capabilities.nelts; i++) { |
| 583 | 201 *p++ = ' '; |
| 202 p = ngx_cpymem(p, c[i].data, c[i].len); | |
| 203 } | |
| 204 | |
| 1323 | 205 auth = p; |
| 206 | |
| 207 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; | |
| 208 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; | |
| 209 m <<= 1, i++) | |
| 210 { | |
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f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
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211 if (m & conf->auth_methods) { |
| 1323 | 212 *p++ = ' '; |
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1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
213 p = ngx_cpymem(p, ngx_mail_imap_auth_methods_names[i].data, |
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f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
214 ngx_mail_imap_auth_methods_names[i].len); |
| 1323 | 215 } |
| 216 } | |
| 217 | |
| 583 | 218 *p++ = CR; *p = LF; |
| 219 | |
| 220 | |
| 221 size += sizeof(" STARTTLS") - 1; | |
| 222 | |
| 2049 | 223 p = ngx_pnalloc(cf->pool, size); |
| 583 | 224 if (p == NULL) { |
| 527 | 225 return NGX_CONF_ERROR; |
| 226 } | |
| 227 | |
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f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
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228 conf->starttls_capability.len = size; |
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f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
229 conf->starttls_capability.data = p; |
| 527 | 230 |
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f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
231 p = ngx_cpymem(p, conf->capability.data, |
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f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
232 conf->capability.len - (sizeof(CRLF) - 1)); |
| 583 | 233 p = ngx_cpymem(p, " STARTTLS", sizeof(" STARTTLS") - 1); |
| 234 *p++ = CR; *p = LF; | |
| 235 | |
| 236 | |
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f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
237 size = (auth - conf->capability.data) + sizeof(CRLF) - 1 |
| 1323 | 238 + sizeof(" STARTTLS LOGINDISABLED") - 1; |
| 583 | 239 |
| 2049 | 240 p = ngx_pnalloc(cf->pool, size); |
| 583 | 241 if (p == NULL) { |
| 242 return NGX_CONF_ERROR; | |
| 527 | 243 } |
| 244 | |
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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
|
245 conf->starttls_only_capability.len = size; |
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f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
246 conf->starttls_only_capability.data = p; |
| 527 | 247 |
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f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
248 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
|
249 auth - conf->capability.data); |
| 1323 | 250 p = ngx_cpymem(p, " STARTTLS LOGINDISABLED", |
| 251 sizeof(" STARTTLS LOGINDISABLED") - 1); | |
| 583 | 252 *p++ = CR; *p = LF; |
| 253 | |
| 521 | 254 return NGX_CONF_OK; |
| 255 } |