static void ngx_mail_smtp_resolve_name_handler(ngx_resolver_ctx_t *ctx) { ngx_uint_t i; ngx_connection_t *c; ngx_mail_session_t *s; s = ctx->data; c = s->connection; if (ctx->state) { ngx_log_error(NGX_LOG_ERR, c->log, 0, "\"%V\" could not be resolved (%i: %s)", &ctx->name, ctx->state, ngx_resolver_strerror(ctx->state)); if (ctx->state == NGX_RESOLVE_NXDOMAIN) { s->host = smtp_unavailable; } else { s->host = smtp_tempunavail; } } else { #if (NGX_DEBUG) { u_char text[NGX_SOCKADDR_STRLEN]; ngx_str_t addr; addr.data = text; for (i = 0; i < ctx->naddrs; i++) { addr.len = ngx_sock_ntop(ctx->addrs[i].sockaddr, ctx->addrs[i].socklen, text, NGX_SOCKADDR_STRLEN, 0); ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, "name was resolved to %V", &addr); } } #endif for (i = 0; i < ctx->naddrs; i++) { if (ngx_cmp_sockaddr(ctx->addrs[i].sockaddr, ctx->addrs[i].socklen, c->sockaddr, c->socklen, 0) == NGX_OK) { goto found; } } s->host = smtp_unavailable; } found: ngx_resolve_name_done(ctx); ngx_mail_smtp_greeting(s, c); }
static void ngx_mail_smtp_resolve_name_handler(ngx_resolver_ctx_t *ctx) { in_addr_t addr; ngx_uint_t i; ngx_connection_t *c; struct sockaddr_in *sin; ngx_mail_session_t *s; s = ctx->data; c = s->connection; if (ctx->state) { ngx_log_error(NGX_LOG_ERR, c->log, 0, "%V could not be resolved (%i: %s)", &ctx->name, ctx->state, ngx_resolver_strerror(ctx->state)); if (ctx->state == NGX_RESOLVE_NXDOMAIN) { s->host = smtp_unavailable; } else { s->host = smtp_tempunavail; } } else { /* AF_INET only */ sin = (struct sockaddr_in *) c->sockaddr; for (i = 0; i < ctx->naddrs; i++) { addr = ctx->addrs[i]; ngx_log_debug4(NGX_LOG_DEBUG_MAIL, c->log, 0, "name was resolved to %ud.%ud.%ud.%ud", (ntohl(addr) >> 24) & 0xff, (ntohl(addr) >> 16) & 0xff, (ntohl(addr) >> 8) & 0xff, ntohl(addr) & 0xff); if (addr == sin->sin_addr.s_addr) { goto found; } } s->host = smtp_unavailable; } found: ngx_resolve_name_done(ctx); ngx_mail_smtp_greeting(s, c); }
void ngx_mail_smtp_init_session(ngx_mail_session_t *s, ngx_connection_t *c) { struct sockaddr_in *sin; ngx_resolver_ctx_t *ctx; ngx_mail_core_srv_conf_t *cscf; cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); if (cscf->resolver == NULL) { s->host = smtp_unavailable; ngx_mail_smtp_greeting(s, c); return; } if (c->sockaddr->sa_family != AF_INET) { s->host = smtp_tempunavail; ngx_mail_smtp_greeting(s, c); return; } c->log->action = "in resolving client address"; ctx = ngx_resolve_start(cscf->resolver, NULL); if (ctx == NULL) { ngx_mail_close_connection(c); return; } /* AF_INET only */ sin = (struct sockaddr_in *) c->sockaddr; ctx->addr = sin->sin_addr.s_addr; ctx->handler = ngx_mail_smtp_resolve_addr_handler; ctx->data = s; ctx->timeout = cscf->resolver_timeout; if (ngx_resolve_addr(ctx) != NGX_OK) { ngx_mail_close_connection(c); } }
void ngx_mail_smtp_init_session(ngx_mail_session_t *s, ngx_connection_t *c) { ngx_resolver_ctx_t *ctx; ngx_mail_core_srv_conf_t *cscf; cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); if (cscf->resolver == NULL) { s->host = smtp_unavailable; ngx_mail_smtp_greeting(s, c); return; } #if (NGX_HAVE_UNIX_DOMAIN) if (c->sockaddr->sa_family == AF_UNIX) { s->host = smtp_tempunavail; ngx_mail_smtp_greeting(s, c); return; } #endif c->log->action = "in resolving client address"; ctx = ngx_resolve_start(cscf->resolver, NULL); if (ctx == NULL) { ngx_mail_close_connection(c); return; } ctx->addr.sockaddr = c->sockaddr; ctx->addr.socklen = c->socklen; ctx->handler = ngx_mail_smtp_resolve_addr_handler; ctx->data = s; ctx->timeout = cscf->resolver_timeout; if (ngx_resolve_addr(ctx) != NGX_OK) { ngx_mail_close_connection(c); } }
static void ngx_mail_smtp_resolve_addr_handler(ngx_resolver_ctx_t *ctx) { ngx_connection_t *c; ngx_mail_session_t *s; s = ctx->data; c = s->connection; if (ctx->state) { ngx_log_error(NGX_LOG_ERR, c->log, 0, "%V could not be resolved (%i: %s)", &c->addr_text, ctx->state, ngx_resolver_strerror(ctx->state)); if (ctx->state == NGX_RESOLVE_NXDOMAIN) { s->host = smtp_unavailable; } else { s->host = smtp_tempunavail; } ngx_resolve_addr_done(ctx); ngx_mail_smtp_greeting(s, s->connection); return; } c->log->action = "in resolving client hostname"; s->host.data = ngx_pstrdup(c->pool, &ctx->name); if (s->host.data == NULL) { ngx_resolve_addr_done(ctx); ngx_mail_close_connection(c); return; } s->host.len = ctx->name.len; ngx_resolve_addr_done(ctx); ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, "address resolved: %V", &s->host); c->read->handler = ngx_mail_smtp_resolve_name; ngx_post_event(c->read, &ngx_posted_events); }
static void ngx_mail_smtp_resolve_addr_handler(ngx_resolver_ctx_t *ctx) { ngx_connection_t *c; ngx_mail_session_t *s; ngx_mail_core_srv_conf_t *cscf; s = ctx->data; c = s->connection; if (ctx->state) { ngx_log_error(NGX_LOG_ERR, c->log, 0, "%V could not be resolved (%i: %s)", &c->addr_text, ctx->state, ngx_resolver_strerror(ctx->state)); if (ctx->state == NGX_RESOLVE_NXDOMAIN) { s->host = smtp_unavailable; } else { s->host = smtp_tempunavail; } ngx_resolve_addr_done(ctx); ngx_mail_smtp_greeting(s, s->connection); return; } c->log->action = "in resolving client hostname"; s->host.data = ngx_pstrdup(c->pool, &ctx->name); if (s->host.data == NULL) { ngx_resolve_addr_done(ctx); ngx_mail_close_connection(c); return; } s->host.len = ctx->name.len; ngx_resolve_addr_done(ctx); ngx_log_debug1(NGX_LOG_DEBUG_MAIL, c->log, 0, "address resolved: %V", &s->host); cscf = ngx_mail_get_module_srv_conf(s, ngx_mail_core_module); ctx = ngx_resolve_start(cscf->resolver, NULL); if (ctx == NULL) { ngx_mail_close_connection(c); return; } ctx->name = s->host; ctx->type = NGX_RESOLVE_A; ctx->handler = ngx_mail_smtp_resolve_name_handler; ctx->data = s; ctx->timeout = cscf->resolver_timeout; if (ngx_resolve_name(ctx) != NGX_OK) { ngx_mail_close_connection(c); } }