diff options
Diffstat (limited to 'src/stream/ngx_stream_core_module.c')
| -rw-r--r-- | src/stream/ngx_stream_core_module.c | 495 |
1 files changed, 495 insertions, 0 deletions
diff --git a/src/stream/ngx_stream_core_module.c b/src/stream/ngx_stream_core_module.c new file mode 100644 index 000000000..c0df412a5 --- /dev/null +++ b/src/stream/ngx_stream_core_module.c @@ -0,0 +1,495 @@ + +/* + * Copyright (C) Roman Arutyunyan + * Copyright (C) Nginx, Inc. + */ + + +#include <ngx_config.h> +#include <ngx_core.h> +#include <ngx_stream.h> + + +static void *ngx_stream_core_create_main_conf(ngx_conf_t *cf); +static void *ngx_stream_core_create_srv_conf(ngx_conf_t *cf); +static char *ngx_stream_core_merge_srv_conf(ngx_conf_t *cf, void *parent, + void *child); +static char *ngx_stream_core_error_log(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_stream_core_server(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); +static char *ngx_stream_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, + void *conf); + + +static ngx_command_t ngx_stream_core_commands[] = { + + { ngx_string("server"), + NGX_STREAM_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, + ngx_stream_core_server, + 0, + 0, + NULL }, + + { ngx_string("listen"), + NGX_STREAM_SRV_CONF|NGX_CONF_1MORE, + ngx_stream_core_listen, + NGX_STREAM_SRV_CONF_OFFSET, + 0, + NULL }, + + { ngx_string("error_log"), + NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_1MORE, + ngx_stream_core_error_log, + NGX_STREAM_SRV_CONF_OFFSET, + 0, + NULL }, + + ngx_null_command +}; + + +static ngx_stream_module_t ngx_stream_core_module_ctx = { + ngx_stream_core_create_main_conf, /* create main configuration */ + NULL, /* init main configuration */ + + ngx_stream_core_create_srv_conf, /* create server configuration */ + ngx_stream_core_merge_srv_conf /* merge server configuration */ +}; + + +ngx_module_t ngx_stream_core_module = { + NGX_MODULE_V1, + &ngx_stream_core_module_ctx, /* module context */ + ngx_stream_core_commands, /* module directives */ + NGX_STREAM_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 void * +ngx_stream_core_create_main_conf(ngx_conf_t *cf) +{ + ngx_stream_core_main_conf_t *cmcf; + + cmcf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_core_main_conf_t)); + if (cmcf == NULL) { + return NULL; + } + + if (ngx_array_init(&cmcf->servers, cf->pool, 4, + sizeof(ngx_stream_core_srv_conf_t *)) + != NGX_OK) + { + return NULL; + } + + if (ngx_array_init(&cmcf->listen, cf->pool, 4, sizeof(ngx_stream_listen_t)) + != NGX_OK) + { + return NULL; + } + + return cmcf; +} + + +static void * +ngx_stream_core_create_srv_conf(ngx_conf_t *cf) +{ + ngx_stream_core_srv_conf_t *cscf; + + cscf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_core_srv_conf_t)); + if (cscf == NULL) { + return NULL; + } + + /* + * set by ngx_pcalloc(): + * + * cscf->handler = NULL; + * cscf->error_log = NULL; + */ + + cscf->file_name = cf->conf_file->file.name.data; + cscf->line = cf->conf_file->line; + + return cscf; +} + + +static char * +ngx_stream_core_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) +{ + ngx_stream_core_srv_conf_t *prev = parent; + ngx_stream_core_srv_conf_t *conf = child; + + if (conf->handler == NULL) { + ngx_log_error(NGX_LOG_EMERG, cf->log, 0, + "no handler for server in %s:%ui", + conf->file_name, conf->line); + return NGX_CONF_ERROR; + } + + if (conf->error_log == NULL) { + if (prev->error_log) { + conf->error_log = prev->error_log; + } else { + conf->error_log = &cf->cycle->new_log; + } + } + + return NGX_CONF_OK; +} + + +static char * +ngx_stream_core_error_log(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + ngx_stream_core_srv_conf_t *cscf = conf; + + return ngx_log_set_log(cf, &cscf->error_log); +} + + +static char * +ngx_stream_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_stream_module_t *module; + ngx_stream_conf_ctx_t *ctx, *stream_ctx; + ngx_stream_core_srv_conf_t *cscf, **cscfp; + ngx_stream_core_main_conf_t *cmcf; + + ctx = ngx_pcalloc(cf->pool, sizeof(ngx_stream_conf_ctx_t)); + if (ctx == NULL) { + return NGX_CONF_ERROR; + } + + stream_ctx = cf->ctx; + ctx->main_conf = stream_ctx->main_conf; + + /* the server{}'s srv_conf */ + + ctx->srv_conf = ngx_pcalloc(cf->pool, + sizeof(void *) * ngx_stream_max_module); + if (ctx->srv_conf == NULL) { + return NGX_CONF_ERROR; + } + + for (m = 0; ngx_modules[m]; m++) { + if (ngx_modules[m]->type != NGX_STREAM_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_stream_core_module.ctx_index]; + cscf->ctx = ctx; + + cmcf = ctx->main_conf[ngx_stream_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_STREAM_SRV_CONF; + + rv = ngx_conf_parse(cf, NULL); + + *cf = pcf; + + return rv; +} + + +static char * +ngx_stream_core_listen(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) +{ + size_t len, off; + in_port_t port; + ngx_str_t *value; + ngx_url_t u; + ngx_uint_t i; + struct sockaddr *sa; + struct sockaddr_in *sin; + ngx_stream_listen_t *ls; + ngx_stream_core_main_conf_t *cmcf; +#if (NGX_HAVE_INET6) + struct sockaddr_in6 *sin6; +#endif + + value = cf->args->elts; + + ngx_memzero(&u, sizeof(ngx_url_t)); + + u.url = value[1]; + u.listen = 1; + + if (ngx_parse_url(cf->pool, &u) != NGX_OK) { + if (u.err) { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "%s in \"%V\" of the \"listen\" directive", + u.err, &u.url); + } + + return NGX_CONF_ERROR; + } + + cmcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_core_module); + + ls = cmcf->listen.elts; + + for (i = 0; i < cmcf->listen.nelts; i++) { + + sa = (struct sockaddr *) ls[i].sockaddr; + + if (sa->sa_family != u.family) { + continue; + } + + switch (sa->sa_family) { + +#if (NGX_HAVE_INET6) + case AF_INET6: + off = offsetof(struct sockaddr_in6, sin6_addr); + len = 16; + sin6 = (struct sockaddr_in6 *) sa; + port = sin6->sin6_port; + break; +#endif + +#if (NGX_HAVE_UNIX_DOMAIN) + case AF_UNIX: + off = offsetof(struct sockaddr_un, sun_path); + len = sizeof(((struct sockaddr_un *) sa)->sun_path); + port = 0; + break; +#endif + + default: /* AF_INET */ + off = offsetof(struct sockaddr_in, sin_addr); + len = 4; + sin = (struct sockaddr_in *) sa; + port = sin->sin_port; + break; + } + + if (ngx_memcmp(ls[i].sockaddr + off, u.sockaddr + off, len) != 0) { + continue; + } + + if (port != u.port) { + continue; + } + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "duplicate \"%V\" address and port pair", &u.url); + return NGX_CONF_ERROR; + } + + ls = ngx_array_push(&cmcf->listen); + if (ls == NULL) { + return NGX_CONF_ERROR; + } + + ngx_memzero(ls, sizeof(ngx_stream_listen_t)); + + ngx_memcpy(ls->sockaddr, u.sockaddr, u.socklen); + + ls->socklen = u.socklen; + ls->wildcard = u.wildcard; + ls->ctx = cf->ctx; + +#if (NGX_HAVE_INET6 && defined IPV6_V6ONLY) + ls->ipv6only = 1; +#endif + + for (i = 2; i < cf->args->nelts; i++) { + + if (ngx_strcmp(value[i].data, "bind") == 0) { + ls->bind = 1; + continue; + } + + if (ngx_strncmp(value[i].data, "ipv6only=o", 10) == 0) { +#if (NGX_HAVE_INET6 && defined IPV6_V6ONLY) + struct sockaddr *sa; + u_char buf[NGX_SOCKADDR_STRLEN]; + + sa = (struct sockaddr *) ls->sockaddr; + + if (sa->sa_family == AF_INET6) { + + if (ngx_strcmp(&value[i].data[10], "n") == 0) { + ls->ipv6only = 1; + + } else if (ngx_strcmp(&value[i].data[10], "ff") == 0) { + ls->ipv6only = 0; + + } else { + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid ipv6only flags \"%s\"", + &value[i].data[9]); + return NGX_CONF_ERROR; + } + + ls->bind = 1; + + } else { + len = ngx_sock_ntop(sa, ls->socklen, buf, + NGX_SOCKADDR_STRLEN, 1); + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "ipv6only is not supported " + "on addr \"%*s\", ignored", len, buf); + } + + continue; +#else + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "bind ipv6only is not supported " + "on this platform"); + return NGX_CONF_ERROR; +#endif + } + + if (ngx_strcmp(value[i].data, "ssl") == 0) { +#if (NGX_STREAM_SSL) + ls->ssl = 1; + continue; +#else + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the \"ssl\" parameter requires " + "ngx_stream_ssl_module"); + return NGX_CONF_ERROR; +#endif + } + + if (ngx_strncmp(value[i].data, "so_keepalive=", 13) == 0) { + + if (ngx_strcmp(&value[i].data[13], "on") == 0) { + ls->so_keepalive = 1; + + } else if (ngx_strcmp(&value[i].data[13], "off") == 0) { + ls->so_keepalive = 2; + + } else { + +#if (NGX_HAVE_KEEPALIVE_TUNABLE) + u_char *p, *end; + ngx_str_t s; + + end = value[i].data + value[i].len; + s.data = value[i].data + 13; + + p = ngx_strlchr(s.data, end, ':'); + if (p == NULL) { + p = end; + } + + if (p > s.data) { + s.len = p - s.data; + + ls->tcp_keepidle = ngx_parse_time(&s, 1); + if (ls->tcp_keepidle == (time_t) NGX_ERROR) { + goto invalid_so_keepalive; + } + } + + s.data = (p < end) ? (p + 1) : end; + + p = ngx_strlchr(s.data, end, ':'); + if (p == NULL) { + p = end; + } + + if (p > s.data) { + s.len = p - s.data; + + ls->tcp_keepintvl = ngx_parse_time(&s, 1); + if (ls->tcp_keepintvl == (time_t) NGX_ERROR) { + goto invalid_so_keepalive; + } + } + + s.data = (p < end) ? (p + 1) : end; + + if (s.data < end) { + s.len = end - s.data; + + ls->tcp_keepcnt = ngx_atoi(s.data, s.len); + if (ls->tcp_keepcnt == NGX_ERROR) { + goto invalid_so_keepalive; + } + } + + if (ls->tcp_keepidle == 0 && ls->tcp_keepintvl == 0 + && ls->tcp_keepcnt == 0) + { + goto invalid_so_keepalive; + } + + ls->so_keepalive = 1; + +#else + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the \"so_keepalive\" parameter accepts " + "only \"on\" or \"off\" on this platform"); + return NGX_CONF_ERROR; + +#endif + } + + ls->bind = 1; + + continue; + +#if (NGX_HAVE_KEEPALIVE_TUNABLE) + invalid_so_keepalive: + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "invalid so_keepalive value: \"%s\"", + &value[i].data[13]); + return NGX_CONF_ERROR; +#endif + } + + ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, + "the invalid \"%V\" parameter", &value[i]); + return NGX_CONF_ERROR; + } + + return NGX_CONF_OK; +} |