diff options
Diffstat (limited to 'src/mail/ngx_mail.c')
| -rw-r--r-- | src/mail/ngx_mail.c | 416 |
1 files changed, 416 insertions, 0 deletions
diff --git a/src/mail/ngx_mail.c b/src/mail/ngx_mail.c new file mode 100644 index 000000000..56e9b04c1 --- /dev/null +++ b/src/mail/ngx_mail.c @@ -0,0 +1,416 @@ + +/* + * Copyright (C) Igor Sysoev + */ + + +#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 int ngx_libc_cdecl ngx_mail_cmp_conf_in_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; + u_char *text; + size_t len; + ngx_uint_t i, a, l, m, mi, s, p, last, bind_all, done; + ngx_conf_t pcf; + ngx_array_t in_ports; + ngx_listening_t *ls; + ngx_mail_listen_t *imls; + ngx_mail_module_t *module; + ngx_mail_in_port_t *imip; + ngx_mail_conf_ctx_t *ctx; + ngx_mail_conf_in_port_t *in_port; + ngx_mail_conf_in_addr_t *in_addr; + 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 http 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, the null srv_conf's, and the null loc_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 */ + + 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 */ + + 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; + } + } + } + } + + /* mail{}'s cf->ctx was needed while the configuration merging */ + + *cf = pcf; + + + if (ngx_array_init(&in_ports, cf->temp_pool, 4, + sizeof(ngx_mail_conf_in_port_t)) + != NGX_OK) + { + return NGX_CONF_ERROR; + } + + imls = cmcf->listen.elts; + + for (l = 0; l < cmcf->listen.nelts; l++) { + + /* AF_INET only */ + + in_port = in_ports.elts; + for (p = 0; p < in_ports.nelts; p++) { + if (in_port[p].port == imls[l].port) { + in_port = &in_port[p]; + goto found; + } + } + + in_port = ngx_array_push(&in_ports); + if (in_port == NULL) { + return NGX_CONF_ERROR; + } + + in_port->port = imls[l].port; + + if (ngx_array_init(&in_port->addrs, cf->temp_pool, 2, + sizeof(ngx_mail_conf_in_addr_t)) + != NGX_OK) + { + return NGX_CONF_ERROR; + } + + found: + + in_addr = ngx_array_push(&in_port->addrs); + if (in_addr == NULL) { + return NGX_CONF_ERROR; + } + + in_addr->addr = imls[l].addr; + in_addr->ctx = imls[l].ctx; + in_addr->bind = imls[l].bind; + } + + /* optimize the lists of ports and addresses */ + + /* AF_INET only */ + + in_port = in_ports.elts; + for (p = 0; p < in_ports.nelts; p++) { + + ngx_qsort(in_port[p].addrs.elts, (size_t) in_port[p].addrs.nelts, + sizeof(ngx_mail_conf_in_addr_t), ngx_mail_cmp_conf_in_addrs); + + in_addr = in_port[p].addrs.elts; + last = in_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 (in_addr[last - 1].addr == INADDR_ANY) { + in_addr[last - 1].bind = 1; + bind_all = 0; + + } else { + bind_all = 1; + } + + for (a = 0; a < last; /* void */ ) { + + if (!bind_all && !in_addr[a].bind) { + a++; + continue; + } + + ls = ngx_listening_inet_stream_socket(cf, in_addr[a].addr, + in_port[p].port); + if (ls == NULL) { + return NGX_CONF_ERROR; + } + + ls->backlog = -1; + ls->rcvbuf = -1; + ls->sndbuf = -1; + + ls->addr_ntop = 1; + ls->handler = ngx_mail_init_connection; + ls->pool_size = 256; + + /* STUB */ + ls->log = *cf->cycle->new_log; + ls->log.data = &ls->addr_text; + ls->log.handler = ngx_accept_log_error; + /**/ + + imip = ngx_palloc(cf->pool, sizeof(ngx_mail_in_port_t)); + if (imip == NULL) { + return NGX_CONF_ERROR; + } + + ls->servers = imip; + + in_addr = in_port[p].addrs.elts; + + if (in_addr[a].bind && in_addr[a].addr != INADDR_ANY) { + imip->naddrs = 1; + done = 0; + + } else if (in_port[p].addrs.nelts > 1 + && in_addr[last - 1].addr == INADDR_ANY) + { + imip->naddrs = last; + done = 1; + + } else { + imip->naddrs = 1; + done = 0; + } + +#if 0 + ngx_log_error(NGX_LOG_ALERT, cf->log, 0, + "%ui: %V %d %ui %ui", + a, &ls->addr_text, in_addr[a].bind, + imip->naddrs, last); +#endif + + imip->addrs = ngx_pcalloc(cf->pool, + imip->naddrs * sizeof(ngx_mail_in_addr_t)); + if (imip->addrs == NULL) { + return NGX_CONF_ERROR; + } + + for (i = 0; i < imip->naddrs; i++) { + imip->addrs[i].addr = in_addr[i].addr; + imip->addrs[i].ctx = in_addr[i].ctx; + + text = ngx_palloc(cf->pool, + INET_ADDRSTRLEN - 1 + sizeof(":65535") - 1); + if (text == NULL) { + return NGX_CONF_ERROR; + } + + len = ngx_inet_ntop(AF_INET, &in_addr[i].addr, text, + INET_ADDRSTRLEN); + + len = ngx_sprintf(text + len, ":%d", in_port[p].port) - text; + + imip->addrs[i].addr_text.len = len; + imip->addrs[i].addr_text.data = text; + } + + if (done) { + break; + } + + in_addr++; + in_port[p].addrs.elts = in_addr; + last--; + + a = 0; + } + } + + return NGX_CONF_OK; +} + + +static int ngx_libc_cdecl +ngx_mail_cmp_conf_in_addrs(const void *one, const void *two) +{ + ngx_mail_conf_in_addr_t *first, *second; + + first = (ngx_mail_conf_in_addr_t *) one; + second = (ngx_mail_conf_in_addr_t *) two; + + if (first->addr == INADDR_ANY) { + /* the INADDR_ANY 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; +} |