diff options
Diffstat (limited to 'app/nginx/src/stream/ngx_stream_access_module.c')
| -rw-r--r-- | app/nginx/src/stream/ngx_stream_access_module.c | 459 |
1 files changed, 0 insertions, 459 deletions
diff --git a/app/nginx/src/stream/ngx_stream_access_module.c b/app/nginx/src/stream/ngx_stream_access_module.c deleted file mode 100644 index 1745cdf..0000000 --- a/app/nginx/src/stream/ngx_stream_access_module.c +++ /dev/null @@ -1,459 +0,0 @@ - -/* - * Copyright (C) Igor Sysoev - * Copyright (C) Nginx, Inc. - */ - - -#include <ngx_config.h> -#include <ngx_core.h> -#include <ngx_stream.h> - - -typedef struct { - in_addr_t mask; - in_addr_t addr; - ngx_uint_t deny; /* unsigned deny:1; */ -} ngx_stream_access_rule_t; - -#if (NGX_HAVE_INET6) - -typedef struct { - struct in6_addr addr; - struct in6_addr mask; - ngx_uint_t deny; /* unsigned deny:1; */ -} ngx_stream_access_rule6_t; - -#endif - -#if (NGX_HAVE_UNIX_DOMAIN) - -typedef struct { - ngx_uint_t deny; /* unsigned deny:1; */ -} ngx_stream_access_rule_un_t; - -#endif - -typedef struct { - ngx_array_t *rules; /* array of ngx_stream_access_rule_t */ -#if (NGX_HAVE_INET6) - ngx_array_t *rules6; /* array of ngx_stream_access_rule6_t */ -#endif -#if (NGX_HAVE_UNIX_DOMAIN) - ngx_array_t *rules_un; /* array of ngx_stream_access_rule_un_t */ -#endif -} ngx_stream_access_srv_conf_t; - - -static ngx_int_t ngx_stream_access_handler(ngx_stream_session_t *s); -static ngx_int_t ngx_stream_access_inet(ngx_stream_session_t *s, - ngx_stream_access_srv_conf_t *ascf, in_addr_t addr); -#if (NGX_HAVE_INET6) -static ngx_int_t ngx_stream_access_inet6(ngx_stream_session_t *s, - ngx_stream_access_srv_conf_t *ascf, u_char *p); -#endif -#if (NGX_HAVE_UNIX_DOMAIN) -static ngx_int_t ngx_stream_access_unix(ngx_stream_session_t *s, - ngx_stream_access_srv_conf_t *ascf); -#endif -static ngx_int_t ngx_stream_access_found(ngx_stream_session_t *s, - ngx_uint_t deny); -static char *ngx_stream_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, - void *conf); -static void *ngx_stream_access_create_srv_conf(ngx_conf_t *cf); -static char *ngx_stream_access_merge_srv_conf(ngx_conf_t *cf, - void *parent, void *child); -static ngx_int_t ngx_stream_access_init(ngx_conf_t *cf); - - -static ngx_command_t ngx_stream_access_commands[] = { - - { ngx_string("allow"), - NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, - ngx_stream_access_rule, - NGX_STREAM_SRV_CONF_OFFSET, - 0, - NULL }, - - { ngx_string("deny"), - NGX_STREAM_MAIN_CONF|NGX_STREAM_SRV_CONF|NGX_CONF_TAKE1, - ngx_stream_access_rule, - NGX_STREAM_SRV_CONF_OFFSET, - 0, - NULL }, - - ngx_null_command -}; - - - -static ngx_stream_module_t ngx_stream_access_module_ctx = { - NULL, /* preconfiguration */ - ngx_stream_access_init, /* postconfiguration */ - - NULL, /* create main configuration */ - NULL, /* init main configuration */ - - ngx_stream_access_create_srv_conf, /* create server configuration */ - ngx_stream_access_merge_srv_conf /* merge server configuration */ -}; - - -ngx_module_t ngx_stream_access_module = { - NGX_MODULE_V1, - &ngx_stream_access_module_ctx, /* module context */ - ngx_stream_access_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 ngx_int_t -ngx_stream_access_handler(ngx_stream_session_t *s) -{ - struct sockaddr_in *sin; - ngx_stream_access_srv_conf_t *ascf; -#if (NGX_HAVE_INET6) - u_char *p; - in_addr_t addr; - struct sockaddr_in6 *sin6; -#endif - - ascf = ngx_stream_get_module_srv_conf(s, ngx_stream_access_module); - - switch (s->connection->sockaddr->sa_family) { - - case AF_INET: - if (ascf->rules) { - sin = (struct sockaddr_in *) s->connection->sockaddr; - return ngx_stream_access_inet(s, ascf, sin->sin_addr.s_addr); - } - break; - -#if (NGX_HAVE_INET6) - - case AF_INET6: - sin6 = (struct sockaddr_in6 *) s->connection->sockaddr; - p = sin6->sin6_addr.s6_addr; - - if (ascf->rules && IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { - addr = p[12] << 24; - addr += p[13] << 16; - addr += p[14] << 8; - addr += p[15]; - return ngx_stream_access_inet(s, ascf, htonl(addr)); - } - - if (ascf->rules6) { - return ngx_stream_access_inet6(s, ascf, p); - } - - break; - -#endif - -#if (NGX_HAVE_UNIX_DOMAIN) - - case AF_UNIX: - if (ascf->rules_un) { - return ngx_stream_access_unix(s, ascf); - } - - break; - -#endif - } - - return NGX_DECLINED; -} - - -static ngx_int_t -ngx_stream_access_inet(ngx_stream_session_t *s, - ngx_stream_access_srv_conf_t *ascf, in_addr_t addr) -{ - ngx_uint_t i; - ngx_stream_access_rule_t *rule; - - rule = ascf->rules->elts; - for (i = 0; i < ascf->rules->nelts; i++) { - - ngx_log_debug3(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, - "access: %08XD %08XD %08XD", - addr, rule[i].mask, rule[i].addr); - - if ((addr & rule[i].mask) == rule[i].addr) { - return ngx_stream_access_found(s, rule[i].deny); - } - } - - return NGX_DECLINED; -} - - -#if (NGX_HAVE_INET6) - -static ngx_int_t -ngx_stream_access_inet6(ngx_stream_session_t *s, - ngx_stream_access_srv_conf_t *ascf, u_char *p) -{ - ngx_uint_t n; - ngx_uint_t i; - ngx_stream_access_rule6_t *rule6; - - rule6 = ascf->rules6->elts; - for (i = 0; i < ascf->rules6->nelts; i++) { - -#if (NGX_DEBUG) - { - size_t cl, ml, al; - u_char ct[NGX_INET6_ADDRSTRLEN]; - u_char mt[NGX_INET6_ADDRSTRLEN]; - u_char at[NGX_INET6_ADDRSTRLEN]; - - cl = ngx_inet6_ntop(p, ct, NGX_INET6_ADDRSTRLEN); - ml = ngx_inet6_ntop(rule6[i].mask.s6_addr, mt, NGX_INET6_ADDRSTRLEN); - al = ngx_inet6_ntop(rule6[i].addr.s6_addr, at, NGX_INET6_ADDRSTRLEN); - - ngx_log_debug6(NGX_LOG_DEBUG_STREAM, s->connection->log, 0, - "access: %*s %*s %*s", cl, ct, ml, mt, al, at); - } -#endif - - for (n = 0; n < 16; n++) { - if ((p[n] & rule6[i].mask.s6_addr[n]) != rule6[i].addr.s6_addr[n]) { - goto next; - } - } - - return ngx_stream_access_found(s, rule6[i].deny); - - next: - continue; - } - - return NGX_DECLINED; -} - -#endif - - -#if (NGX_HAVE_UNIX_DOMAIN) - -static ngx_int_t -ngx_stream_access_unix(ngx_stream_session_t *s, - ngx_stream_access_srv_conf_t *ascf) -{ - ngx_uint_t i; - ngx_stream_access_rule_un_t *rule_un; - - rule_un = ascf->rules_un->elts; - for (i = 0; i < ascf->rules_un->nelts; i++) { - - /* TODO: check path */ - if (1) { - return ngx_stream_access_found(s, rule_un[i].deny); - } - } - - return NGX_DECLINED; -} - -#endif - - -static ngx_int_t -ngx_stream_access_found(ngx_stream_session_t *s, ngx_uint_t deny) -{ - if (deny) { - ngx_log_error(NGX_LOG_ERR, s->connection->log, 0, - "access forbidden by rule"); - return NGX_STREAM_FORBIDDEN; - } - - return NGX_OK; -} - - -static char * -ngx_stream_access_rule(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) -{ - ngx_stream_access_srv_conf_t *ascf = conf; - - ngx_int_t rc; - ngx_uint_t all; - ngx_str_t *value; - ngx_cidr_t cidr; - ngx_stream_access_rule_t *rule; -#if (NGX_HAVE_INET6) - ngx_stream_access_rule6_t *rule6; -#endif -#if (NGX_HAVE_UNIX_DOMAIN) - ngx_stream_access_rule_un_t *rule_un; -#endif - - ngx_memzero(&cidr, sizeof(ngx_cidr_t)); - - value = cf->args->elts; - - all = (value[1].len == 3 && ngx_strcmp(value[1].data, "all") == 0); - - if (!all) { - -#if (NGX_HAVE_UNIX_DOMAIN) - - if (value[1].len == 5 && ngx_strcmp(value[1].data, "unix:") == 0) { - cidr.family = AF_UNIX; - rc = NGX_OK; - - } else { - rc = ngx_ptocidr(&value[1], &cidr); - } - -#else - rc = ngx_ptocidr(&value[1], &cidr); -#endif - - if (rc == NGX_ERROR) { - ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, - "invalid parameter \"%V\"", &value[1]); - return NGX_CONF_ERROR; - } - - if (rc == NGX_DONE) { - ngx_conf_log_error(NGX_LOG_WARN, cf, 0, - "low address bits of %V are meaningless", &value[1]); - } - } - - if (cidr.family == AF_INET || all) { - - if (ascf->rules == NULL) { - ascf->rules = ngx_array_create(cf->pool, 4, - sizeof(ngx_stream_access_rule_t)); - if (ascf->rules == NULL) { - return NGX_CONF_ERROR; - } - } - - rule = ngx_array_push(ascf->rules); - if (rule == NULL) { - return NGX_CONF_ERROR; - } - - rule->mask = cidr.u.in.mask; - rule->addr = cidr.u.in.addr; - rule->deny = (value[0].data[0] == 'd') ? 1 : 0; - } - -#if (NGX_HAVE_INET6) - if (cidr.family == AF_INET6 || all) { - - if (ascf->rules6 == NULL) { - ascf->rules6 = ngx_array_create(cf->pool, 4, - sizeof(ngx_stream_access_rule6_t)); - if (ascf->rules6 == NULL) { - return NGX_CONF_ERROR; - } - } - - rule6 = ngx_array_push(ascf->rules6); - if (rule6 == NULL) { - return NGX_CONF_ERROR; - } - - rule6->mask = cidr.u.in6.mask; - rule6->addr = cidr.u.in6.addr; - rule6->deny = (value[0].data[0] == 'd') ? 1 : 0; - } -#endif - -#if (NGX_HAVE_UNIX_DOMAIN) - if (cidr.family == AF_UNIX || all) { - - if (ascf->rules_un == NULL) { - ascf->rules_un = ngx_array_create(cf->pool, 1, - sizeof(ngx_stream_access_rule_un_t)); - if (ascf->rules_un == NULL) { - return NGX_CONF_ERROR; - } - } - - rule_un = ngx_array_push(ascf->rules_un); - if (rule_un == NULL) { - return NGX_CONF_ERROR; - } - - rule_un->deny = (value[0].data[0] == 'd') ? 1 : 0; - } -#endif - - return NGX_CONF_OK; -} - - -static void * -ngx_stream_access_create_srv_conf(ngx_conf_t *cf) -{ - ngx_stream_access_srv_conf_t *conf; - - conf = ngx_pcalloc(cf->pool, sizeof(ngx_stream_access_srv_conf_t)); - if (conf == NULL) { - return NULL; - } - - return conf; -} - - -static char * -ngx_stream_access_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child) -{ - ngx_stream_access_srv_conf_t *prev = parent; - ngx_stream_access_srv_conf_t *conf = child; - - if (conf->rules == NULL -#if (NGX_HAVE_INET6) - && conf->rules6 == NULL -#endif -#if (NGX_HAVE_UNIX_DOMAIN) - && conf->rules_un == NULL -#endif - ) { - conf->rules = prev->rules; -#if (NGX_HAVE_INET6) - conf->rules6 = prev->rules6; -#endif -#if (NGX_HAVE_UNIX_DOMAIN) - conf->rules_un = prev->rules_un; -#endif - } - - return NGX_CONF_OK; -} - - -static ngx_int_t -ngx_stream_access_init(ngx_conf_t *cf) -{ - ngx_stream_handler_pt *h; - ngx_stream_core_main_conf_t *cmcf; - - cmcf = ngx_stream_conf_get_module_main_conf(cf, ngx_stream_core_module); - - h = ngx_array_push(&cmcf->phases[NGX_STREAM_ACCESS_PHASE].handlers); - if (h == NULL) { - return NGX_ERROR; - } - - *h = ngx_stream_access_handler; - - return NGX_OK; -} |