Mercurial > hg > nginx-quic
annotate src/mail/ngx_mail_imap_module.c @ 5334:03ff14058272
Added safety belt for the case of sending header twice.
The aforementioned situation is abnormal per se and as such it now forces
request termination with appropriate error message.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Tue, 30 Jul 2013 15:04:46 +0400 |
parents | d620f497c50f |
children | ec01b1d1fff1 |
rev | line source |
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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) |
1136 | 56 }; |
57 | |
58 | |
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59 static ngx_command_t ngx_mail_imap_commands[] = { |
521 | 60 |
61 { ngx_string("imap_client_buffer"), | |
1136 | 62 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_TAKE1, |
521 | 63 ngx_conf_set_size_slot, |
1136 | 64 NGX_MAIL_SRV_CONF_OFFSET, |
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65 offsetof(ngx_mail_imap_srv_conf_t, client_buffer_size), |
527 | 66 NULL }, |
67 | |
68 { ngx_string("imap_capabilities"), | |
1136 | 69 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, |
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70 ngx_mail_capabilities, |
1136 | 71 NGX_MAIL_SRV_CONF_OFFSET, |
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72 offsetof(ngx_mail_imap_srv_conf_t, capabilities), |
800 | 73 NULL }, |
74 | |
1323 | 75 { ngx_string("imap_auth"), |
76 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
77 ngx_conf_set_bitmask_slot, | |
78 NGX_MAIL_SRV_CONF_OFFSET, | |
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79 offsetof(ngx_mail_imap_srv_conf_t, auth_methods), |
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80 &ngx_mail_imap_auth_methods }, |
800 | 81 |
521 | 82 ngx_null_command |
83 }; | |
84 | |
85 | |
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86 static ngx_mail_module_t ngx_mail_imap_module_ctx = { |
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87 &ngx_mail_imap_protocol, /* protocol */ |
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88 |
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89 NULL, /* create main configuration */ |
521 | 90 NULL, /* init main configuration */ |
91 | |
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92 ngx_mail_imap_create_srv_conf, /* create server configuration */ |
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93 ngx_mail_imap_merge_srv_conf /* merge server configuration */ |
521 | 94 }; |
95 | |
96 | |
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97 ngx_module_t ngx_mail_imap_module = { |
521 | 98 NGX_MODULE_V1, |
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99 &ngx_mail_imap_module_ctx, /* module context */ |
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100 ngx_mail_imap_commands, /* module directives */ |
1136 | 101 NGX_MAIL_MODULE, /* module type */ |
541 | 102 NULL, /* init master */ |
521 | 103 NULL, /* init module */ |
541 | 104 NULL, /* init process */ |
105 NULL, /* init thread */ | |
106 NULL, /* exit thread */ | |
107 NULL, /* exit process */ | |
108 NULL, /* exit master */ | |
109 NGX_MODULE_V1_PADDING | |
521 | 110 }; |
111 | |
112 | |
113 static void * | |
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114 ngx_mail_imap_create_srv_conf(ngx_conf_t *cf) |
577 | 115 { |
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116 ngx_mail_imap_srv_conf_t *iscf; |
641 | 117 |
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118 iscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_imap_srv_conf_t)); |
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119 if (iscf == NULL) { |
527 | 120 return NULL; |
521 | 121 } |
122 | |
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123 iscf->client_buffer_size = NGX_CONF_UNSET_SIZE; |
521 | 124 |
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125 if (ngx_array_init(&iscf->capabilities, cf->pool, 4, sizeof(ngx_str_t)) |
1136 | 126 != NGX_OK) |
127 { | |
128 return NULL; | |
129 } | |
130 | |
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131 return iscf; |
521 | 132 } |
133 | |
134 | |
135 static char * | |
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136 ngx_mail_imap_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) |
521 | 137 { |
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138 ngx_mail_imap_srv_conf_t *prev = parent; |
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139 ngx_mail_imap_srv_conf_t *conf = child; |
521 | 140 |
1322 | 141 u_char *p, *auth; |
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142 size_t size; |
527 | 143 ngx_str_t *c, *d; |
1136 | 144 ngx_uint_t i, m; |
527 | 145 |
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146 ngx_conf_merge_size_value(conf->client_buffer_size, |
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147 prev->client_buffer_size, |
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148 (size_t) ngx_pagesize); |
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149 |
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150 ngx_conf_merge_bitmask_value(conf->auth_methods, |
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151 prev->auth_methods, |
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152 (NGX_CONF_BITMASK_SET |
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153 |NGX_MAIL_AUTH_PLAIN_ENABLED)); |
1323 | 154 |
800 | 155 |
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156 if (conf->capabilities.nelts == 0) { |
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157 conf->capabilities = prev->capabilities; |
527 | 158 } |
159 | |
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160 if (conf->capabilities.nelts == 0) { |
527 | 161 |
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162 for (d = ngx_mail_imap_default_capabilities; d->len; d++) { |
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163 c = ngx_array_push(&conf->capabilities); |
527 | 164 if (c == NULL) { |
165 return NGX_CONF_ERROR; | |
166 } | |
167 | |
168 *c = *d; | |
169 } | |
170 } | |
171 | |
1136 | 172 size = sizeof("* CAPABILITY" CRLF) - 1; |
527 | 173 |
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174 c = conf->capabilities.elts; |
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175 for (i = 0; i < conf->capabilities.nelts; i++) { |
527 | 176 size += 1 + c[i].len; |
177 } | |
178 | |
1323 | 179 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; |
180 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; | |
181 m <<= 1, i++) | |
182 { | |
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183 if (m & conf->auth_methods) { |
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184 size += 1 + ngx_mail_imap_auth_methods_names[i].len; |
1323 | 185 } |
186 } | |
187 | |
2049 | 188 p = ngx_pnalloc(cf->pool, size); |
583 | 189 if (p == NULL) { |
190 return NGX_CONF_ERROR; | |
191 } | |
192 | |
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193 conf->capability.len = size; |
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194 conf->capability.data = p; |
583 | 195 |
196 p = ngx_cpymem(p, "* CAPABILITY", sizeof("* CAPABILITY") - 1); | |
197 | |
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198 for (i = 0; i < conf->capabilities.nelts; i++) { |
583 | 199 *p++ = ' '; |
200 p = ngx_cpymem(p, c[i].data, c[i].len); | |
201 } | |
202 | |
1323 | 203 auth = p; |
204 | |
205 for (m = NGX_MAIL_AUTH_PLAIN_ENABLED, i = 0; | |
206 m <= NGX_MAIL_AUTH_CRAM_MD5_ENABLED; | |
207 m <<= 1, i++) | |
208 { | |
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209 if (m & conf->auth_methods) { |
1323 | 210 *p++ = ' '; |
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211 p = ngx_cpymem(p, ngx_mail_imap_auth_methods_names[i].data, |
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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
|
212 ngx_mail_imap_auth_methods_names[i].len); |
1323 | 213 } |
214 } | |
215 | |
583 | 216 *p++ = CR; *p = LF; |
217 | |
218 | |
219 size += sizeof(" STARTTLS") - 1; | |
220 | |
2049 | 221 p = ngx_pnalloc(cf->pool, size); |
583 | 222 if (p == NULL) { |
527 | 223 return NGX_CONF_ERROR; |
224 } | |
225 | |
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
226 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
|
227 conf->starttls_capability.data = p; |
527 | 228 |
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
229 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
|
230 conf->capability.len - (sizeof(CRLF) - 1)); |
583 | 231 p = ngx_cpymem(p, " STARTTLS", sizeof(" STARTTLS") - 1); |
232 *p++ = CR; *p = LF; | |
233 | |
234 | |
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
235 size = (auth - conf->capability.data) + sizeof(CRLF) - 1 |
1323 | 236 + sizeof(" STARTTLS LOGINDISABLED") - 1; |
583 | 237 |
2049 | 238 p = ngx_pnalloc(cf->pool, size); |
583 | 239 if (p == NULL) { |
240 return NGX_CONF_ERROR; | |
527 | 241 } |
242 | |
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
243 conf->starttls_only_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
|
244 conf->starttls_only_capability.data = p; |
527 | 245 |
1487
f69493e8faab
ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
diff
changeset
|
246 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
|
247 auth - conf->capability.data); |
1323 | 248 p = ngx_cpymem(p, " STARTTLS LOGINDISABLED", |
249 sizeof(" STARTTLS LOGINDISABLED") - 1); | |
583 | 250 *p++ = CR; *p = LF; |
251 | |
521 | 252 return NGX_CONF_OK; |
253 } |