Mercurial > hg > nginx-quic
view src/http/modules/ngx_http_auth_basic_module.c @ 8285:0697294f79a4 quic
QUIC: removed redundant "app" flag from ngx_quic_close_frame_t.
The flag was introduced to create type-aware CONNECTION_CLOSE frames,
and now is replaced with frame type information, directly accessible.
Notably, this fixes type logging for received frames in b3d9e57d0f62.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Wed, 03 Feb 2021 12:39:41 +0300 |
parents | 0cb942c1c1aa |
children | bdd4d89370a7 |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> #include <ngx_crypt.h> #define NGX_HTTP_AUTH_BUF_SIZE 2048 typedef struct { ngx_http_complex_value_t *realm; ngx_http_complex_value_t user_file; } ngx_http_auth_basic_loc_conf_t; static ngx_int_t ngx_http_auth_basic_handler(ngx_http_request_t *r); static ngx_int_t ngx_http_auth_basic_crypt_handler(ngx_http_request_t *r, ngx_str_t *passwd, ngx_str_t *realm); static ngx_int_t ngx_http_auth_basic_set_realm(ngx_http_request_t *r, ngx_str_t *realm); static void *ngx_http_auth_basic_create_loc_conf(ngx_conf_t *cf); static char *ngx_http_auth_basic_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child); static ngx_int_t ngx_http_auth_basic_init(ngx_conf_t *cf); static char *ngx_http_auth_basic_user_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_command_t ngx_http_auth_basic_commands[] = { { ngx_string("auth_basic"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF |NGX_CONF_TAKE1, ngx_http_set_complex_value_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_auth_basic_loc_conf_t, realm), NULL }, { ngx_string("auth_basic_user_file"), NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_HTTP_LMT_CONF |NGX_CONF_TAKE1, ngx_http_auth_basic_user_file, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_auth_basic_loc_conf_t, user_file), NULL }, ngx_null_command }; static ngx_http_module_t ngx_http_auth_basic_module_ctx = { NULL, /* preconfiguration */ ngx_http_auth_basic_init, /* postconfiguration */ NULL, /* create main configuration */ NULL, /* init main configuration */ NULL, /* create server configuration */ NULL, /* merge server configuration */ ngx_http_auth_basic_create_loc_conf, /* create location configuration */ ngx_http_auth_basic_merge_loc_conf /* merge location configuration */ }; ngx_module_t ngx_http_auth_basic_module = { NGX_MODULE_V1, &ngx_http_auth_basic_module_ctx, /* module context */ ngx_http_auth_basic_commands, /* module directives */ NGX_HTTP_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_http_auth_basic_handler(ngx_http_request_t *r) { off_t offset; ssize_t n; ngx_fd_t fd; ngx_int_t rc; ngx_err_t err; ngx_str_t pwd, realm, user_file; ngx_uint_t i, level, login, left, passwd; ngx_file_t file; ngx_http_auth_basic_loc_conf_t *alcf; u_char buf[NGX_HTTP_AUTH_BUF_SIZE]; enum { sw_login, sw_passwd, sw_skip } state; alcf = ngx_http_get_module_loc_conf(r, ngx_http_auth_basic_module); if (alcf->realm == NULL || alcf->user_file.value.data == NULL) { return NGX_DECLINED; } if (ngx_http_complex_value(r, alcf->realm, &realm) != NGX_OK) { return NGX_ERROR; } if (realm.len == 3 && ngx_strncmp(realm.data, "off", 3) == 0) { return NGX_DECLINED; } rc = ngx_http_auth_basic_user(r); if (rc == NGX_DECLINED) { ngx_log_error(NGX_LOG_INFO, r->connection->log, 0, "no user/password was provided for basic authentication"); return ngx_http_auth_basic_set_realm(r, &realm); } if (rc == NGX_ERROR) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } if (ngx_http_complex_value(r, &alcf->user_file, &user_file) != NGX_OK) { return NGX_ERROR; } fd = ngx_open_file(user_file.data, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0); if (fd == NGX_INVALID_FILE) { err = ngx_errno; if (err == NGX_ENOENT) { level = NGX_LOG_ERR; rc = NGX_HTTP_FORBIDDEN; } else { level = NGX_LOG_CRIT; rc = NGX_HTTP_INTERNAL_SERVER_ERROR; } ngx_log_error(level, r->connection->log, err, ngx_open_file_n " \"%s\" failed", user_file.data); return rc; } ngx_memzero(&file, sizeof(ngx_file_t)); file.fd = fd; file.name = user_file; file.log = r->connection->log; state = sw_login; passwd = 0; login = 0; left = 0; offset = 0; for ( ;; ) { i = left; n = ngx_read_file(&file, buf + left, NGX_HTTP_AUTH_BUF_SIZE - left, offset); if (n == NGX_ERROR) { rc = NGX_HTTP_INTERNAL_SERVER_ERROR; goto cleanup; } if (n == 0) { break; } for (i = left; i < left + n; i++) { switch (state) { case sw_login: if (login == 0) { if (buf[i] == '#' || buf[i] == CR) { state = sw_skip; break; } if (buf[i] == LF) { break; } } if (buf[i] != r->headers_in.user.data[login]) { state = sw_skip; break; } if (login == r->headers_in.user.len) { state = sw_passwd; passwd = i + 1; } login++; break; case sw_passwd: if (buf[i] == LF || buf[i] == CR || buf[i] == ':') { buf[i] = '\0'; pwd.len = i - passwd; pwd.data = &buf[passwd]; rc = ngx_http_auth_basic_crypt_handler(r, &pwd, &realm); goto cleanup; } break; case sw_skip: if (buf[i] == LF) { state = sw_login; login = 0; } break; } } if (state == sw_passwd) { left = left + n - passwd; ngx_memmove(buf, &buf[passwd], left); passwd = 0; } else { left = 0; } offset += n; } if (state == sw_passwd) { pwd.len = i - passwd; pwd.data = ngx_pnalloc(r->pool, pwd.len + 1); if (pwd.data == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } ngx_cpystrn(pwd.data, &buf[passwd], pwd.len + 1); rc = ngx_http_auth_basic_crypt_handler(r, &pwd, &realm); goto cleanup; } ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "user \"%V\" was not found in \"%s\"", &r->headers_in.user, user_file.data); rc = ngx_http_auth_basic_set_realm(r, &realm); cleanup: if (ngx_close_file(file.fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno, ngx_close_file_n " \"%s\" failed", user_file.data); } ngx_explicit_memzero(buf, NGX_HTTP_AUTH_BUF_SIZE); return rc; } static ngx_int_t ngx_http_auth_basic_crypt_handler(ngx_http_request_t *r, ngx_str_t *passwd, ngx_str_t *realm) { ngx_int_t rc; u_char *encrypted; rc = ngx_crypt(r->pool, r->headers_in.passwd.data, passwd->data, &encrypted); ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "rc: %i user: \"%V\" salt: \"%s\"", rc, &r->headers_in.user, passwd->data); if (rc != NGX_OK) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } if (ngx_strcmp(encrypted, passwd->data) == 0) { return NGX_OK; } ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "encrypted: \"%s\"", encrypted); ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "user \"%V\": password mismatch", &r->headers_in.user); return ngx_http_auth_basic_set_realm(r, realm); } static ngx_int_t ngx_http_auth_basic_set_realm(ngx_http_request_t *r, ngx_str_t *realm) { size_t len; u_char *basic, *p; r->headers_out.www_authenticate = ngx_list_push(&r->headers_out.headers); if (r->headers_out.www_authenticate == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } len = sizeof("Basic realm=\"\"") - 1 + realm->len; basic = ngx_pnalloc(r->pool, len); if (basic == NULL) { r->headers_out.www_authenticate->hash = 0; r->headers_out.www_authenticate = NULL; return NGX_HTTP_INTERNAL_SERVER_ERROR; } p = ngx_cpymem(basic, "Basic realm=\"", sizeof("Basic realm=\"") - 1); p = ngx_cpymem(p, realm->data, realm->len); *p = '"'; r->headers_out.www_authenticate->hash = 1; ngx_str_set(&r->headers_out.www_authenticate->key, "WWW-Authenticate"); r->headers_out.www_authenticate->value.data = basic; r->headers_out.www_authenticate->value.len = len; return NGX_HTTP_UNAUTHORIZED; } static void * ngx_http_auth_basic_create_loc_conf(ngx_conf_t *cf) { ngx_http_auth_basic_loc_conf_t *conf; conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_auth_basic_loc_conf_t)); if (conf == NULL) { return NULL; } return conf; } static char * ngx_http_auth_basic_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) { ngx_http_auth_basic_loc_conf_t *prev = parent; ngx_http_auth_basic_loc_conf_t *conf = child; if (conf->realm == NULL) { conf->realm = prev->realm; } if (conf->user_file.value.data == NULL) { conf->user_file = prev->user_file; } return NGX_CONF_OK; } static ngx_int_t ngx_http_auth_basic_init(ngx_conf_t *cf) { ngx_http_handler_pt *h; ngx_http_core_main_conf_t *cmcf; cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); h = ngx_array_push(&cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers); if (h == NULL) { return NGX_ERROR; } *h = ngx_http_auth_basic_handler; return NGX_OK; } static char * ngx_http_auth_basic_user_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { ngx_http_auth_basic_loc_conf_t *alcf = conf; ngx_str_t *value; ngx_http_compile_complex_value_t ccv; if (alcf->user_file.value.data) { return "is duplicate"; } value = cf->args->elts; ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t)); ccv.cf = cf; ccv.value = &value[1]; ccv.complex_value = &alcf->user_file; ccv.zero = 1; ccv.conf_prefix = 1; if (ngx_http_compile_complex_value(&ccv) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; }