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4e010c2834
nginx/src/mail/ngx_mail.c
Vladimir Homutov 4e010c2834 Mail: error_log support.
2015-02-20 15:31:37 +03:00

570 lines
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/*
* 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_string("imap"),
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 (cmd->name.data[0] == 'i') {
ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
"the \"imap\" directive is deprecated, "
"use the \"mail\" directive instead");
}
/* 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 = 0;
for (m = 0; ngx_modules[m]; m++) {
if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
continue;
}
ngx_modules[m]->ctx_index = ngx_mail_max_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; ngx_modules[m]; m++) {
if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
continue;
}
module = ngx_modules[m]->ctx;
mi = ngx_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; ngx_modules[m]; m++) {
if (ngx_modules[m]->type != NGX_MAIL_MODULE) {
continue;
}
module = ngx_modules[m]->ctx;
mi = ngx_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;
struct sockaddr_in *sin;
ngx_mail_conf_port_t *port;
ngx_mail_conf_addr_t *addr;
#if (NGX_HAVE_INET6)
struct sockaddr_in6 *sin6;
#endif
sa = (struct sockaddr *) &listen->sockaddr;
switch (sa->sa_family) {
#if (NGX_HAVE_INET6)
case AF_INET6:
sin6 = (struct sockaddr_in6 *) sa;
p = sin6->sin6_port;
break;
#endif
#if (NGX_HAVE_UNIX_DOMAIN)
case AF_UNIX:
p = 0;
break;
#endif
default: /* AF_INET */
sin = (struct sockaddr_in *) sa;
p = sin->sin_port;
break;
}
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->sockaddr = (struct sockaddr *) &listen->sockaddr;
addr->socklen = listen->socklen;
addr->ctx = listen->ctx;
addr->bind = listen->bind;
addr->wildcard = listen->wildcard;
addr->so_keepalive = listen->so_keepalive;
#if (NGX_HAVE_KEEPALIVE_TUNABLE)
addr->tcp_keepidle = listen->tcp_keepidle;
addr->tcp_keepintvl = listen->tcp_keepintvl;
addr->tcp_keepcnt = listen->tcp_keepcnt;
#endif
#if (NGX_MAIL_SSL)
addr->ssl = listen->ssl;
#endif
#if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
addr->ipv6only = listen->ipv6only;
#endif
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].wildcard) {
addr[last - 1].bind = 1;
bind_wildcard = 1;
} else {
bind_wildcard = 0;
}
i = 0;
while (i < last) {
if (bind_wildcard && !addr[i].bind) {
i++;
continue;
}
ls = ngx_create_listening(cf, addr[i].sockaddr, addr[i].socklen);
if (ls == NULL) {
return NGX_CONF_ERROR;
}
ls->addr_ntop = 1;
ls->handler = ngx_mail_init_connection;
ls->pool_size = 256;
cscf = addr->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->keepalive = addr[i].so_keepalive;
#if (NGX_HAVE_KEEPALIVE_TUNABLE)
ls->keepidle = addr[i].tcp_keepidle;
ls->keepintvl = addr[i].tcp_keepintvl;
ls->keepcnt = addr[i].tcp_keepcnt;
#endif
#if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
ls->ipv6only = addr[i].ipv6only;
#endif
mport = ngx_palloc(cf->pool, sizeof(ngx_mail_port_t));
if (mport == NULL) {
return NGX_CONF_ERROR;
}
ls->servers = mport;
if (i == last - 1) {
mport->naddrs = last;
} else {
mport->naddrs = 1;
i = 0;
}
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 = (struct sockaddr_in *) addr[i].sockaddr;
addrs[i].addr = sin->sin_addr.s_addr;
addrs[i].conf.ctx = addr[i].ctx;
#if (NGX_MAIL_SSL)
addrs[i].conf.ssl = addr[i].ssl;
#endif
len = ngx_sock_ntop(addr[i].sockaddr, addr[i].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 = (struct sockaddr_in6 *) addr[i].sockaddr;
addrs6[i].addr6 = sin6->sin6_addr;
addrs6[i].conf.ctx = addr[i].ctx;
#if (NGX_MAIL_SSL)
addrs6[i].conf.ssl = addr[i].ssl;
#endif
len = ngx_sock_ntop(addr[i].sockaddr, addr[i].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->wildcard) {
/* a wildcard must be the last resort, shift it to the end */
return 1;
}
if (second->wildcard) {
/* a wildcard must be the last resort, shift it to the end */
return -1;
}
if (first->bind && !second->bind) {
/* shift explicit bind()ed addresses to the start */
return -1;
}
if (!first->bind && second->bind) {
/* shift explicit bind()ed addresses to the start */
return 1;
}
/* do not sort by default */
return 0;
}
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