Mercurial > hg > nginx
annotate src/mail/ngx_mail_pop3_module.c @ 5468:5c410d6ca7dd
Resolver: improved code readability.
Renamed ngx_resolver_query_t to ngx_resolver_hdr_t as it describes
the header that is common to DNS queries and answers.
Replaced the magic number 12 by the size of the header structure.
The other changes are self-explanatory.
| author | Ruslan Ermilov <ru@nginx.com> |
|---|---|
| date | Fri, 06 Dec 2013 14:30:27 +0400 |
| parents | d620f497c50f |
| children | ec01b1d1fff1 |
| 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 }; |
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63 |
| 587 | 64 |
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65 static ngx_command_t ngx_mail_pop3_commands[] = { |
| 521 | 66 |
| 527 | 67 { ngx_string("pop3_capabilities"), |
| 1136 | 68 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, |
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69 ngx_mail_capabilities, |
| 1136 | 70 NGX_MAIL_SRV_CONF_OFFSET, |
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71 offsetof(ngx_mail_pop3_srv_conf_t, capabilities), |
| 527 | 72 NULL }, |
| 73 | |
| 1136 | 74 { ngx_string("pop3_auth"), |
| 75 NGX_MAIL_MAIN_CONF|NGX_MAIL_SRV_CONF|NGX_CONF_1MORE, | |
| 800 | 76 ngx_conf_set_bitmask_slot, |
| 1136 | 77 NGX_MAIL_SRV_CONF_OFFSET, |
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78 offsetof(ngx_mail_pop3_srv_conf_t, auth_methods), |
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79 &ngx_mail_pop3_auth_methods }, |
| 800 | 80 |
| 521 | 81 ngx_null_command |
| 82 }; | |
| 83 | |
| 84 | |
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85 static ngx_mail_module_t ngx_mail_pop3_module_ctx = { |
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86 &ngx_mail_pop3_protocol, /* protocol */ |
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87 |
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88 NULL, /* create main configuration */ |
| 521 | 89 NULL, /* init main configuration */ |
| 90 | |
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91 ngx_mail_pop3_create_srv_conf, /* create server configuration */ |
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92 ngx_mail_pop3_merge_srv_conf /* merge server configuration */ |
| 521 | 93 }; |
| 94 | |
| 95 | |
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96 ngx_module_t ngx_mail_pop3_module = { |
| 521 | 97 NGX_MODULE_V1, |
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98 &ngx_mail_pop3_module_ctx, /* module context */ |
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99 ngx_mail_pop3_commands, /* module directives */ |
| 1136 | 100 NGX_MAIL_MODULE, /* module type */ |
| 541 | 101 NULL, /* init master */ |
| 521 | 102 NULL, /* init module */ |
| 541 | 103 NULL, /* init process */ |
| 104 NULL, /* init thread */ | |
| 105 NULL, /* exit thread */ | |
| 106 NULL, /* exit process */ | |
| 107 NULL, /* exit master */ | |
| 108 NGX_MODULE_V1_PADDING | |
| 521 | 109 }; |
| 110 | |
| 111 | |
| 112 static void * | |
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113 ngx_mail_pop3_create_srv_conf(ngx_conf_t *cf) |
| 577 | 114 { |
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115 ngx_mail_pop3_srv_conf_t *pscf; |
| 641 | 116 |
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117 pscf = ngx_pcalloc(cf->pool, sizeof(ngx_mail_pop3_srv_conf_t)); |
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118 if (pscf == NULL) { |
| 527 | 119 return NULL; |
| 521 | 120 } |
| 121 | |
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122 if (ngx_array_init(&pscf->capabilities, cf->pool, 4, sizeof(ngx_str_t)) |
| 1136 | 123 != NGX_OK) |
| 124 { | |
| 125 return NULL; | |
| 126 } | |
| 127 | |
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128 return pscf; |
| 521 | 129 } |
| 130 | |
| 131 | |
| 132 static char * | |
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133 ngx_mail_pop3_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) |
| 521 | 134 { |
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135 ngx_mail_pop3_srv_conf_t *prev = parent; |
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136 ngx_mail_pop3_srv_conf_t *conf = child; |
| 521 | 137 |
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138 u_char *p; |
| 1136 | 139 size_t size, stls_only_size; |
| 527 | 140 ngx_str_t *c, *d; |
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141 ngx_uint_t i; |
| 1136 | 142 |
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143 ngx_conf_merge_bitmask_value(conf->auth_methods, |
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144 prev->auth_methods, |
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145 (NGX_CONF_BITMASK_SET |
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146 |NGX_MAIL_AUTH_PLAIN_ENABLED)); |
| 800 | 147 |
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148 if (conf->capabilities.nelts == 0) { |
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149 conf->capabilities = prev->capabilities; |
| 800 | 150 } |
| 151 | |
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152 if (conf->capabilities.nelts == 0) { |
| 527 | 153 |
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154 for (d = ngx_mail_pop3_default_capabilities; d->len; d++) { |
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155 c = ngx_array_push(&conf->capabilities); |
| 527 | 156 if (c == NULL) { |
| 157 return NGX_CONF_ERROR; | |
| 158 } | |
| 159 | |
| 160 *c = *d; | |
| 161 } | |
| 162 } | |
| 163 | |
| 164 size = sizeof("+OK Capability list follows" CRLF) - 1 | |
| 165 + sizeof("." CRLF) - 1; | |
| 166 | |
| 1136 | 167 stls_only_size = size + sizeof("STLS" CRLF) - 1; |
| 168 | |
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169 c = conf->capabilities.elts; |
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170 for (i = 0; i < conf->capabilities.nelts; i++) { |
| 527 | 171 size += c[i].len + sizeof(CRLF) - 1; |
| 1136 | 172 |
| 173 if (ngx_strcasecmp(c[i].data, (u_char *) "USER") == 0) { | |
| 174 continue; | |
| 175 } | |
| 176 | |
| 177 stls_only_size += c[i].len + sizeof(CRLF) - 1; | |
| 527 | 178 } |
| 179 | |
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180 if (conf->auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED) { |
| 809 | 181 size += sizeof("SASL LOGIN PLAIN CRAM-MD5" CRLF) - 1; |
| 182 | |
| 183 } else { | |
| 184 size += sizeof("SASL LOGIN PLAIN" CRLF) - 1; | |
| 185 } | |
| 186 | |
| 2049 | 187 p = ngx_pnalloc(cf->pool, size); |
| 583 | 188 if (p == NULL) { |
| 527 | 189 return NGX_CONF_ERROR; |
| 190 } | |
| 191 | |
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192 conf->capability.len = size; |
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193 conf->capability.data = p; |
| 583 | 194 |
| 195 p = ngx_cpymem(p, "+OK Capability list follows" CRLF, | |
| 196 sizeof("+OK Capability list follows" CRLF) - 1); | |
| 527 | 197 |
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198 for (i = 0; i < conf->capabilities.nelts; i++) { |
| 583 | 199 p = ngx_cpymem(p, c[i].data, c[i].len); |
| 200 *p++ = CR; *p++ = LF; | |
| 527 | 201 } |
| 202 | |
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203 if (conf->auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED) { |
| 809 | 204 p = ngx_cpymem(p, "SASL LOGIN PLAIN CRAM-MD5" CRLF, |
| 205 sizeof("SASL LOGIN PLAIN CRAM-MD5" CRLF) - 1); | |
| 206 | |
| 207 } else { | |
| 208 p = ngx_cpymem(p, "SASL LOGIN PLAIN" CRLF, | |
| 209 sizeof("SASL LOGIN PLAIN" CRLF) - 1); | |
| 210 } | |
| 211 | |
| 583 | 212 *p++ = '.'; *p++ = CR; *p = LF; |
| 213 | |
| 214 | |
| 215 size += sizeof("STLS" CRLF) - 1; | |
| 527 | 216 |
| 2049 | 217 p = ngx_pnalloc(cf->pool, size); |
| 583 | 218 if (p == NULL) { |
| 219 return NGX_CONF_ERROR; | |
| 220 } | |
| 221 | |
|
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Igor Sysoev <igor@sysoev.ru>
parents:
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changeset
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222 conf->starttls_capability.len = size; |
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ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
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changeset
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223 conf->starttls_capability.data = p; |
| 583 | 224 |
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ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
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changeset
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225 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
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226 conf->capability.len - (sizeof("." CRLF) - 1)); |
| 583 | 227 |
| 228 p = ngx_cpymem(p, "STLS" CRLF, sizeof("STLS" CRLF) - 1); | |
| 229 *p++ = '.'; *p++ = CR; *p = LF; | |
| 527 | 230 |
| 231 | |
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ngx_mail_pop3_module, ngx_mail_imap_module, and ngx_mail_smtp_module
Igor Sysoev <igor@sysoev.ru>
parents:
1481
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changeset
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232 if (conf->auth_methods & NGX_MAIL_AUTH_CRAM_MD5_ENABLED) { |
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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
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changeset
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233 conf->auth_capability = ngx_mail_pop3_auth_cram_md5_capability; |
| 809 | 234 |
| 235 } else { | |
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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
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236 conf->auth_capability = ngx_mail_pop3_auth_plain_capability; |
| 809 | 237 } |
| 238 | |
| 239 | |
| 2049 | 240 p = ngx_pnalloc(cf->pool, stls_only_size); |
| 1136 | 241 if (p == NULL) { |
| 242 return NGX_CONF_ERROR; | |
| 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
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245 conf->starttls_only_capability.len = stls_only_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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246 conf->starttls_only_capability.data = p; |
| 1136 | 247 |
| 248 p = ngx_cpymem(p, "+OK Capability list follows" CRLF, | |
| 249 sizeof("+OK Capability list follows" CRLF) - 1); | |
| 250 | |
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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
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251 for (i = 0; i < conf->capabilities.nelts; i++) { |
| 1136 | 252 if (ngx_strcasecmp(c[i].data, (u_char *) "USER") == 0) { |
| 253 continue; | |
| 254 } | |
| 255 | |
| 256 p = ngx_cpymem(p, c[i].data, c[i].len); | |
| 257 *p++ = CR; *p++ = LF; | |
| 258 } | |
| 259 | |
| 260 p = ngx_cpymem(p, "STLS" CRLF, sizeof("STLS" CRLF) - 1); | |
| 261 *p++ = '.'; *p++ = CR; *p = LF; | |
| 262 | |
| 521 | 263 return NGX_CONF_OK; |
| 264 } |