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-rw-r--r--app/nginx/src/mail/ngx_mail.c510
1 files changed, 510 insertions, 0 deletions
diff --git a/app/nginx/src/mail/ngx_mail.c b/app/nginx/src/mail/ngx_mail.c
new file mode 100644
index 0000000..9e560bb
--- /dev/null
+++ b/app/nginx/src/mail/ngx_mail.c
@@ -0,0 +1,510 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ * Copyright (C) Nginx, Inc.
+ */
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_event.h>
+#include <ngx_mail.h>
+
+
+static char *ngx_mail_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf);
+static ngx_int_t ngx_mail_add_ports(ngx_conf_t *cf, ngx_array_t *ports,
+ ngx_mail_listen_t *listen);
+static char *ngx_mail_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports);
+static ngx_int_t ngx_mail_add_addrs(ngx_conf_t *cf, ngx_mail_port_t *mport,
+ ngx_mail_conf_addr_t *addr);
+#if (NGX_HAVE_INET6)
+static ngx_int_t ngx_mail_add_addrs6(ngx_conf_t *cf, ngx_mail_port_t *mport,
+ ngx_mail_conf_addr_t *addr);
+#endif
+static ngx_int_t ngx_mail_cmp_conf_addrs(const void *one, const void *two);
+
+
+ngx_uint_t ngx_mail_max_module;
+
+
+static ngx_command_t ngx_mail_commands[] = {
+
+ { ngx_string("mail"),
+ NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS,
+ ngx_mail_block,
+ 0,
+ 0,
+ NULL },
+
+ ngx_null_command
+};
+
+
+static ngx_core_module_t ngx_mail_module_ctx = {
+ ngx_string("mail"),
+ NULL,
+ NULL
+};
+
+
+ngx_module_t ngx_mail_module = {
+ NGX_MODULE_V1,
+ &ngx_mail_module_ctx, /* module context */
+ ngx_mail_commands, /* module directives */
+ NGX_CORE_MODULE, /* module type */
+ NULL, /* init master */
+ NULL, /* init module */
+ NULL, /* init process */
+ NULL, /* init thread */
+ NULL, /* exit thread */
+ NULL, /* exit process */
+ NULL, /* exit master */
+ NGX_MODULE_V1_PADDING
+};
+
+
+static char *
+ngx_mail_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
+{
+ char *rv;
+ ngx_uint_t i, m, mi, s;
+ ngx_conf_t pcf;
+ ngx_array_t ports;
+ ngx_mail_listen_t *listen;
+ ngx_mail_module_t *module;
+ ngx_mail_conf_ctx_t *ctx;
+ ngx_mail_core_srv_conf_t **cscfp;
+ ngx_mail_core_main_conf_t *cmcf;
+
+ if (*(ngx_mail_conf_ctx_t **) conf) {
+ return "is duplicate";
+ }
+
+ /* the main mail context */
+
+ ctx = ngx_pcalloc(cf->pool, sizeof(ngx_mail_conf_ctx_t));
+ if (ctx == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ *(ngx_mail_conf_ctx_t **) conf = ctx;
+
+ /* count the number of the mail modules and set up their indices */
+
+ ngx_mail_max_module = ngx_count_modules(cf->cycle, NGX_MAIL_MODULE);
+
+
+ /* the mail main_conf context, it is the same in the all mail contexts */
+
+ ctx->main_conf = ngx_pcalloc(cf->pool,
+ sizeof(void *) * ngx_mail_max_module);
+ if (ctx->main_conf == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+
+ /*
+ * the mail null srv_conf context, it is used to merge
+ * the server{}s' srv_conf's
+ */
+
+ ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_mail_max_module);
+ if (ctx->srv_conf == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+
+ /*
+ * create the main_conf's and the null srv_conf's of the all mail modules
+ */
+
+ for (m = 0; cf->cycle->modules[m]; m++) {
+ if (cf->cycle->modules[m]->type != NGX_MAIL_MODULE) {
+ continue;
+ }
+
+ module = cf->cycle->modules[m]->ctx;
+ mi = cf->cycle->modules[m]->ctx_index;
+
+ if (module->create_main_conf) {
+ ctx->main_conf[mi] = module->create_main_conf(cf);
+ if (ctx->main_conf[mi] == NULL) {
+ return NGX_CONF_ERROR;
+ }
+ }
+
+ if (module->create_srv_conf) {
+ ctx->srv_conf[mi] = module->create_srv_conf(cf);
+ if (ctx->srv_conf[mi] == NULL) {
+ return NGX_CONF_ERROR;
+ }
+ }
+ }
+
+
+ /* parse inside the mail{} block */
+
+ pcf = *cf;
+ cf->ctx = ctx;
+
+ cf->module_type = NGX_MAIL_MODULE;
+ cf->cmd_type = NGX_MAIL_MAIN_CONF;
+ rv = ngx_conf_parse(cf, NULL);
+
+ if (rv != NGX_CONF_OK) {
+ *cf = pcf;
+ return rv;
+ }
+
+
+ /* init mail{} main_conf's, merge the server{}s' srv_conf's */
+
+ cmcf = ctx->main_conf[ngx_mail_core_module.ctx_index];
+ cscfp = cmcf->servers.elts;
+
+ for (m = 0; cf->cycle->modules[m]; m++) {
+ if (cf->cycle->modules[m]->type != NGX_MAIL_MODULE) {
+ continue;
+ }
+
+ module = cf->cycle->modules[m]->ctx;
+ mi = cf->cycle->modules[m]->ctx_index;
+
+ /* init mail{} main_conf's */
+
+ cf->ctx = ctx;
+
+ if (module->init_main_conf) {
+ rv = module->init_main_conf(cf, ctx->main_conf[mi]);
+ if (rv != NGX_CONF_OK) {
+ *cf = pcf;
+ return rv;
+ }
+ }
+
+ for (s = 0; s < cmcf->servers.nelts; s++) {
+
+ /* merge the server{}s' srv_conf's */
+
+ cf->ctx = cscfp[s]->ctx;
+
+ if (module->merge_srv_conf) {
+ rv = module->merge_srv_conf(cf,
+ ctx->srv_conf[mi],
+ cscfp[s]->ctx->srv_conf[mi]);
+ if (rv != NGX_CONF_OK) {
+ *cf = pcf;
+ return rv;
+ }
+ }
+ }
+ }
+
+ *cf = pcf;
+
+
+ if (ngx_array_init(&ports, cf->temp_pool, 4, sizeof(ngx_mail_conf_port_t))
+ != NGX_OK)
+ {
+ return NGX_CONF_ERROR;
+ }
+
+ listen = cmcf->listen.elts;
+
+ for (i = 0; i < cmcf->listen.nelts; i++) {
+ if (ngx_mail_add_ports(cf, &ports, &listen[i]) != NGX_OK) {
+ return NGX_CONF_ERROR;
+ }
+ }
+
+ return ngx_mail_optimize_servers(cf, &ports);
+}
+
+
+static ngx_int_t
+ngx_mail_add_ports(ngx_conf_t *cf, ngx_array_t *ports,
+ ngx_mail_listen_t *listen)
+{
+ in_port_t p;
+ ngx_uint_t i;
+ struct sockaddr *sa;
+ ngx_mail_conf_port_t *port;
+ ngx_mail_conf_addr_t *addr;
+
+ sa = &listen->sockaddr.sockaddr;
+ p = ngx_inet_get_port(sa);
+
+ port = ports->elts;
+ for (i = 0; i < ports->nelts; i++) {
+ if (p == port[i].port && sa->sa_family == port[i].family) {
+
+ /* a port is already in the port list */
+
+ port = &port[i];
+ goto found;
+ }
+ }
+
+ /* add a port to the port list */
+
+ port = ngx_array_push(ports);
+ if (port == NULL) {
+ return NGX_ERROR;
+ }
+
+ port->family = sa->sa_family;
+ port->port = p;
+
+ if (ngx_array_init(&port->addrs, cf->temp_pool, 2,
+ sizeof(ngx_mail_conf_addr_t))
+ != NGX_OK)
+ {
+ return NGX_ERROR;
+ }
+
+found:
+
+ addr = ngx_array_push(&port->addrs);
+ if (addr == NULL) {
+ return NGX_ERROR;
+ }
+
+ addr->opt = *listen;
+
+ return NGX_OK;
+}
+
+
+static char *
+ngx_mail_optimize_servers(ngx_conf_t *cf, ngx_array_t *ports)
+{
+ ngx_uint_t i, p, last, bind_wildcard;
+ ngx_listening_t *ls;
+ ngx_mail_port_t *mport;
+ ngx_mail_conf_port_t *port;
+ ngx_mail_conf_addr_t *addr;
+ ngx_mail_core_srv_conf_t *cscf;
+
+ port = ports->elts;
+ for (p = 0; p < ports->nelts; p++) {
+
+ ngx_sort(port[p].addrs.elts, (size_t) port[p].addrs.nelts,
+ sizeof(ngx_mail_conf_addr_t), ngx_mail_cmp_conf_addrs);
+
+ addr = port[p].addrs.elts;
+ last = port[p].addrs.nelts;
+
+ /*
+ * if there is the binding to the "*:port" then we need to bind()
+ * to the "*:port" only and ignore the other bindings
+ */
+
+ if (addr[last - 1].opt.wildcard) {
+ addr[last - 1].opt.bind = 1;
+ bind_wildcard = 1;
+
+ } else {
+ bind_wildcard = 0;
+ }
+
+ i = 0;
+
+ while (i < last) {
+
+ if (bind_wildcard && !addr[i].opt.bind) {
+ i++;
+ continue;
+ }
+
+ ls = ngx_create_listening(cf, &addr[i].opt.sockaddr.sockaddr,
+ addr[i].opt.socklen);
+ if (ls == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ ls->addr_ntop = 1;
+ ls->handler = ngx_mail_init_connection;
+ ls->pool_size = 256;
+
+ cscf = addr->opt.ctx->srv_conf[ngx_mail_core_module.ctx_index];
+
+ ls->logp = cscf->error_log;
+ ls->log.data = &ls->addr_text;
+ ls->log.handler = ngx_accept_log_error;
+
+ ls->backlog = addr[i].opt.backlog;
+
+ ls->keepalive = addr[i].opt.so_keepalive;
+#if (NGX_HAVE_KEEPALIVE_TUNABLE)
+ ls->keepidle = addr[i].opt.tcp_keepidle;
+ ls->keepintvl = addr[i].opt.tcp_keepintvl;
+ ls->keepcnt = addr[i].opt.tcp_keepcnt;
+#endif
+
+#if (NGX_HAVE_INET6)
+ ls->ipv6only = addr[i].opt.ipv6only;
+#endif
+
+ mport = ngx_palloc(cf->pool, sizeof(ngx_mail_port_t));
+ if (mport == NULL) {
+ return NGX_CONF_ERROR;
+ }
+
+ ls->servers = mport;
+
+ mport->naddrs = i + 1;
+
+ switch (ls->sockaddr->sa_family) {
+#if (NGX_HAVE_INET6)
+ case AF_INET6:
+ if (ngx_mail_add_addrs6(cf, mport, addr) != NGX_OK) {
+ return NGX_CONF_ERROR;
+ }
+ break;
+#endif
+ default: /* AF_INET */
+ if (ngx_mail_add_addrs(cf, mport, addr) != NGX_OK) {
+ return NGX_CONF_ERROR;
+ }
+ break;
+ }
+
+ addr++;
+ last--;
+ }
+ }
+
+ return NGX_CONF_OK;
+}
+
+
+static ngx_int_t
+ngx_mail_add_addrs(ngx_conf_t *cf, ngx_mail_port_t *mport,
+ ngx_mail_conf_addr_t *addr)
+{
+ u_char *p;
+ size_t len;
+ ngx_uint_t i;
+ ngx_mail_in_addr_t *addrs;
+ struct sockaddr_in *sin;
+ u_char buf[NGX_SOCKADDR_STRLEN];
+
+ mport->addrs = ngx_pcalloc(cf->pool,
+ mport->naddrs * sizeof(ngx_mail_in_addr_t));
+ if (mport->addrs == NULL) {
+ return NGX_ERROR;
+ }
+
+ addrs = mport->addrs;
+
+ for (i = 0; i < mport->naddrs; i++) {
+
+ sin = &addr[i].opt.sockaddr.sockaddr_in;
+ addrs[i].addr = sin->sin_addr.s_addr;
+
+ addrs[i].conf.ctx = addr[i].opt.ctx;
+#if (NGX_MAIL_SSL)
+ addrs[i].conf.ssl = addr[i].opt.ssl;
+#endif
+
+ len = ngx_sock_ntop(&addr[i].opt.sockaddr.sockaddr, addr[i].opt.socklen,
+ buf, NGX_SOCKADDR_STRLEN, 1);
+
+ p = ngx_pnalloc(cf->pool, len);
+ if (p == NULL) {
+ return NGX_ERROR;
+ }
+
+ ngx_memcpy(p, buf, len);
+
+ addrs[i].conf.addr_text.len = len;
+ addrs[i].conf.addr_text.data = p;
+ }
+
+ return NGX_OK;
+}
+
+
+#if (NGX_HAVE_INET6)
+
+static ngx_int_t
+ngx_mail_add_addrs6(ngx_conf_t *cf, ngx_mail_port_t *mport,
+ ngx_mail_conf_addr_t *addr)
+{
+ u_char *p;
+ size_t len;
+ ngx_uint_t i;
+ ngx_mail_in6_addr_t *addrs6;
+ struct sockaddr_in6 *sin6;
+ u_char buf[NGX_SOCKADDR_STRLEN];
+
+ mport->addrs = ngx_pcalloc(cf->pool,
+ mport->naddrs * sizeof(ngx_mail_in6_addr_t));
+ if (mport->addrs == NULL) {
+ return NGX_ERROR;
+ }
+
+ addrs6 = mport->addrs;
+
+ for (i = 0; i < mport->naddrs; i++) {
+
+ sin6 = &addr[i].opt.sockaddr.sockaddr_in6;
+ addrs6[i].addr6 = sin6->sin6_addr;
+
+ addrs6[i].conf.ctx = addr[i].opt.ctx;
+#if (NGX_MAIL_SSL)
+ addrs6[i].conf.ssl = addr[i].opt.ssl;
+#endif
+
+ len = ngx_sock_ntop(&addr[i].opt.sockaddr.sockaddr, addr[i].opt.socklen,
+ buf, NGX_SOCKADDR_STRLEN, 1);
+
+ p = ngx_pnalloc(cf->pool, len);
+ if (p == NULL) {
+ return NGX_ERROR;
+ }
+
+ ngx_memcpy(p, buf, len);
+
+ addrs6[i].conf.addr_text.len = len;
+ addrs6[i].conf.addr_text.data = p;
+ }
+
+ return NGX_OK;
+}
+
+#endif
+
+
+static ngx_int_t
+ngx_mail_cmp_conf_addrs(const void *one, const void *two)
+{
+ ngx_mail_conf_addr_t *first, *second;
+
+ first = (ngx_mail_conf_addr_t *) one;
+ second = (ngx_mail_conf_addr_t *) two;
+
+ if (first->opt.wildcard) {
+ /* a wildcard must be the last resort, shift it to the end */
+ return 1;
+ }
+
+ if (second->opt.wildcard) {
+ /* a wildcard must be the last resort, shift it to the end */
+ return -1;
+ }
+
+ if (first->opt.bind && !second->opt.bind) {
+ /* shift explicit bind()ed addresses to the start */
+ return -1;
+ }
+
+ if (!first->opt.bind && second->opt.bind) {
+ /* shift explicit bind()ed addresses to the start */
+ return 1;
+ }
+
+ /* do not sort by default */
+
+ return 0;
+}