Mercurial > hg > nginx-vendor-1-0
diff src/imap/ngx_imap_core_module.c @ 76:da9a3b14312d NGINX_0_1_38
nginx 0.1.38
*) Feature: the "limit_rate" directive is supported in in proxy and
FastCGI mode.
*) Feature: the "X-Accel-Limit-Rate" response header line is supported
in proxy and FastCGI mode.
*) Feature: the "break" directive.
*) Feature: the "log_not_found" directive.
*) Bugfix: the response status code was not changed when request was
redirected by the ""X-Accel-Redirect" header line.
*) Bugfix: the variables set by the "set" directive could not be used
in SSI.
*) Bugfix: the segmentation fault may occurred if the SSI page has more
than one remote subrequest.
*) Bugfix: nginx treated the backend response as invalid if the status
line in the header was transferred in two packets; bug appeared in
0.1.29.
*) Feature: the "ssi_types" directive.
*) Feature: the "autoindex_exact_size" directive.
*) Bugfix: the ngx_http_autoindex_module did not support the long file
names in UTF-8.
*) Feature: the IMAP/POP3 proxy.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Fri, 08 Jul 2005 00:00:00 +0400 |
parents | |
children | e916a291e9aa |
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new file mode 100644 --- /dev/null +++ b/src/imap/ngx_imap_core_module.c @@ -0,0 +1,455 @@ + +/* + * Copyright (C) Igor Sysoev + */ + + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_event.h> +#include <ngx_imap.h> + + +static void *ngx_imap_core_create_main_conf(ngx_conf_t *cf); +static void *ngx_imap_core_create_srv_conf(ngx_conf_t *cf); +static char *ngx_imap_core_merge_srv_conf(ngx_conf_t *cf, void *parent, + void *child); +static char *ngx_imap_core_server(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_imap_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_imap_core_capability(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); + + +static ngx_conf_enum_t ngx_imap_core_procotol[] = { + { ngx_string("pop3"), NGX_IMAP_POP3_PROTOCOL }, + { ngx_string("imap"), NGX_IMAP_IMAP_PROTOCOL }, + { ngx_null_string, 0 } +}; + + +static ngx_str_t ngx_pop3_default_capabilities[] = { + ngx_string("TOP"), + ngx_string("USER"), + ngx_string("UIDL"), + ngx_null_string +}; + + +static ngx_str_t ngx_imap_default_capabilities[] = { + ngx_string("IMAP4"), + ngx_string("IMAP4rev1"), + ngx_string("UIDPLUS"), + ngx_null_string +}; + + +static ngx_command_t ngx_imap_core_commands[] = { + + { ngx_string("server"), + NGX_IMAP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, + ngx_imap_core_server, + 0, + 0, + NULL }, + + { ngx_string("listen"), + NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1, + ngx_imap_core_listen, + 0, + 0, + NULL }, + + { ngx_string("protocol"), + NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_enum_slot, + NGX_IMAP_SRV_CONF_OFFSET, + offsetof(ngx_imap_core_srv_conf_t, protocol), + &ngx_imap_core_procotol }, + + { ngx_string("imap_client_buffer"), + NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_size_slot, + NGX_IMAP_SRV_CONF_OFFSET, + offsetof(ngx_imap_core_srv_conf_t, imap_client_buffer_size), + NULL }, + + { ngx_string("proxy_buffer"), + NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_size_slot, + NGX_IMAP_SRV_CONF_OFFSET, + offsetof(ngx_imap_core_srv_conf_t, proxy_buffer_size), + NULL }, + + { ngx_string("timeout"), + NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_TAKE1, + ngx_conf_set_msec_slot, + NGX_IMAP_SRV_CONF_OFFSET, + offsetof(ngx_imap_core_srv_conf_t, timeout), + NULL }, + + { ngx_string("pop3_capabilities"), + NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_1MORE, + ngx_imap_core_capability, + NGX_IMAP_SRV_CONF_OFFSET, + offsetof(ngx_imap_core_srv_conf_t, pop3_capabilities), + NULL }, + + { ngx_string("imap_capabilities"), + NGX_IMAP_MAIN_CONF|NGX_IMAP_SRV_CONF|NGX_CONF_1MORE, + ngx_imap_core_capability, + NGX_IMAP_SRV_CONF_OFFSET, + offsetof(ngx_imap_core_srv_conf_t, imap_capabilities), + NULL }, + + ngx_null_command +}; + + +static ngx_imap_module_t ngx_imap_core_module_ctx = { + ngx_imap_core_create_main_conf, /* create main configuration */ + NULL, /* init main configuration */ + + ngx_imap_core_create_srv_conf, /* create server configuration */ + ngx_imap_core_merge_srv_conf /* merge server configuration */ +}; + + +ngx_module_t ngx_imap_core_module = { + NGX_MODULE_V1, + &ngx_imap_core_module_ctx, /* module context */ + ngx_imap_core_commands, /* module directives */ + NGX_IMAP_MODULE, /* module type */ + NULL, /* init module */ + NULL /* init process */ +}; + + +static void * +ngx_imap_core_create_main_conf(ngx_conf_t *cf) +{ + ngx_imap_core_main_conf_t *cmcf; + + cmcf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_core_main_conf_t)); + if (cmcf == NULL) { + return NGX_CONF_ERROR; + } + + if (ngx_array_init(&cmcf->servers, cf->pool, 4, + sizeof(ngx_imap_core_srv_conf_t *)) == NGX_ERROR) + { + return NGX_CONF_ERROR; + } + + return cmcf; +} + + +static void * +ngx_imap_core_create_srv_conf(ngx_conf_t *cf) +{ + ngx_imap_core_srv_conf_t *cscf; + + cscf = ngx_pcalloc(cf->pool, sizeof(ngx_imap_core_srv_conf_t)); + if (cscf == NULL) { + return NULL; + } + + cscf->imap_client_buffer_size = NGX_CONF_UNSET_SIZE; + cscf->proxy_buffer_size = NGX_CONF_UNSET_SIZE; + cscf->timeout = NGX_CONF_UNSET_MSEC; + cscf->protocol = NGX_CONF_UNSET_UINT; + + if (ngx_array_init(&cscf->pop3_capabilities, cf->pool, 4, sizeof(ngx_str_t)) + != NGX_OK) + { + return NULL; + } + + if (ngx_array_init(&cscf->imap_capabilities, cf->pool, 4, sizeof(ngx_str_t)) + != NGX_OK) + { + return NULL; + } + + return cscf; +} + + +static char * +ngx_imap_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) +{ + ngx_imap_core_srv_conf_t *prev = parent; + ngx_imap_core_srv_conf_t *conf = child; + + size_t size; + ngx_buf_t *b; + ngx_str_t *c, *d; + ngx_uint_t i; + + ngx_conf_merge_size_value(conf->imap_client_buffer_size, + prev->imap_client_buffer_size, + (size_t) ngx_pagesize); + ngx_conf_merge_size_value(conf->proxy_buffer_size, prev->proxy_buffer_size, + (size_t) ngx_pagesize); + ngx_conf_merge_msec_value(conf->timeout, prev->timeout, 60000); + ngx_conf_merge_unsigned_value(conf->protocol, prev->protocol, + NGX_IMAP_IMAP_PROTOCOL); + + + if (conf->pop3_capabilities.nelts == 0) { + conf->pop3_capabilities = prev->pop3_capabilities; + } + + if (conf->pop3_capabilities.nelts == 0) { + + for (d = ngx_pop3_default_capabilities; d->len; d++) { + c = ngx_array_push(&conf->pop3_capabilities); + if (c == NULL) { + return NGX_CONF_ERROR; + } + + *c = *d; + } + } + + size = sizeof("+OK Capability list follows" CRLF) - 1 + + sizeof("." CRLF) - 1; + + c = conf->pop3_capabilities.elts; + for (i = 0; i < conf->pop3_capabilities.nelts; i++) { + size += c[i].len + sizeof(CRLF) - 1; + } + + b = ngx_create_temp_buf(cf->pool, size); + if (b == NULL) { + return NGX_CONF_ERROR; + } + + b->last = ngx_cpymem(b->last, "+OK Capability list follows" CRLF, + sizeof("+OK Capability list follows" CRLF) - 1); + + for (i = 0; i < conf->pop3_capabilities.nelts; i++) { + b->last = ngx_cpymem(b->last, c[i].data, c[i].len); + *b->last++ = CR; *b->last++ = LF; + } + + *b->last++ = '.'; *b->last++ = CR; *b->last++ = LF; + + conf->pop3_capability = b; + + + if (conf->imap_capabilities.nelts == 0) { + conf->imap_capabilities = prev->imap_capabilities; + } + + if (conf->imap_capabilities.nelts == 0) { + + for (d = ngx_imap_default_capabilities; d->len; d++) { + c = ngx_array_push(&conf->imap_capabilities); + if (c == NULL) { + return NGX_CONF_ERROR; + } + + *c = *d; + } + } + + size = sizeof("* CAPABILITY") - 1 + sizeof(CRLF) - 1; + + c = conf->imap_capabilities.elts; + for (i = 0; i < conf->imap_capabilities.nelts; i++) { + size += 1 + c[i].len; + } + + b = ngx_create_temp_buf(cf->pool, size); + if (b == NULL) { + return NGX_CONF_ERROR; + } + + b->last = ngx_cpymem(b->last, "* CAPABILITY", sizeof("* CAPABILITY") - 1); + + for (i = 0; i < conf->imap_capabilities.nelts; i++) { + *b->last++ = ' '; + b->last = ngx_cpymem(b->last, c[i].data, c[i].len); + } + + *b->last++ = CR; *b->last++ = LF; + + conf->imap_capability = b; + + return NGX_CONF_OK; +} + + +static char * +ngx_imap_core_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + char *rv; + void *mconf; + ngx_uint_t m; + ngx_conf_t pcf; + ngx_imap_module_t *module; + ngx_imap_conf_ctx_t *ctx, *imap_ctx; + ngx_imap_core_srv_conf_t *cscf, **cscfp; + ngx_imap_core_main_conf_t *cmcf; + + + ctx = ngx_pcalloc(cf->pool, sizeof(ngx_imap_conf_ctx_t)); + if (ctx == NULL) { + return NGX_CONF_ERROR; + } + + imap_ctx = cf->ctx; + ctx->main_conf = imap_ctx->main_conf; + + /* the server{}'s srv_conf */ + + ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_imap_max_module); + if (ctx->srv_conf == NULL) { + return NGX_CONF_ERROR; + } + + for (m = 0; ngx_modules[m]; m++) { + if (ngx_modules[m]->type != NGX_IMAP_MODULE) { + continue; + } + + module = ngx_modules[m]->ctx; + + if (module->create_srv_conf) { + mconf = module->create_srv_conf(cf); + if (mconf == NULL) { + return NGX_CONF_ERROR; + } + + ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf; + } + } + + /* the server configuration context */ + + cscf = ctx->srv_conf[ngx_imap_core_module.ctx_index]; + cscf->ctx = ctx; + + cmcf = ctx->main_conf[ngx_imap_core_module.ctx_index]; + + cscfp = ngx_array_push(&cmcf->servers); + if (cscfp == NULL) { + return NGX_CONF_ERROR; + } + + *cscfp = cscf; + + + /* parse inside server{} */ + + pcf = *cf; + cf->ctx = ctx; + cf->cmd_type = NGX_IMAP_SRV_CONF; + + rv = ngx_conf_parse(cf, NULL); + + *cf = pcf; + + return rv; +} + + +/* AF_INET only */ + +static char * +ngx_imap_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + char *err; + ngx_str_t *value; + in_addr_t in_addr; + struct hostent *h; + ngx_listening_t *ls; + ngx_inet_upstream_t inet_upstream; + + value = cf->args->elts; + + ngx_memzero(&inet_upstream, sizeof(ngx_inet_upstream_t)); + + inet_upstream.url = value[1]; + inet_upstream.port_only = 1; + + err = ngx_inet_parse_host_port(&inet_upstream); + + if (err) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "%s in \"%V\" of the \"listen\" directive", + err, &inet_upstream.url); + return NGX_CONF_ERROR; + } + + if (inet_upstream.host.len) { + inet_upstream.host.data[inet_upstream.host.len] = '\0'; + + in_addr = inet_addr((const char *) inet_upstream.host.data); + + if (in_addr == INADDR_NONE) { + h = gethostbyname((const char *) inet_upstream.host.data); + + if (h == NULL || h->h_addr_list[0] == NULL) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "can not resolve host \"%s\" " + "in the \"listen\" directive", + inet_upstream.host.data); + return NGX_CONF_ERROR; + } + + in_addr = *(in_addr_t *)(h->h_addr_list[0]); + } + + } else { + in_addr = INADDR_ANY; + } + + + ls = ngx_listening_inet_stream_socket(cf, in_addr, inet_upstream.port); + if (ls == NULL) { + return NGX_CONF_ERROR; + } + + ls->backlog = -1; + ls->addr_ntop = 1; + ls->handler = ngx_imap_init_connection; + ls->pool_size = 256; + + ls->ctx = cf->ctx; + + /* STUB */ + ls->log = cf->cycle->new_log; + /**/ + + return NGX_CONF_OK; +} + + +static char * +ngx_imap_core_capability(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + char *p = conf; + + ngx_str_t *c, *value; + ngx_uint_t i; + ngx_array_t *a; + + a = (ngx_array_t *) (p + cmd->offset); + + value = cf->args->elts; + + for (i = 1; i < cf->args->nelts; i++) { + c = ngx_array_push(a); + if (c == NULL) { + return NGX_CONF_ERROR; + } + + *c = value[i]; + } + + return NGX_CONF_OK; +}