Mercurial > hg > nginx-vendor-current
view src/http/modules/ngx_http_auth_basic_module.c @ 196:8759b346e431 NGINX_0_3_45
nginx 0.3.45
*) Feature: the "ssl_verify_client", "ssl_verify_depth", and
"ssl_client_certificate" directives.
*) Change: the $request_method variable now returns the main request
method.
*) Change: the ° symbol codes were changed in koi-win conversion
table.
*) Feature: the euro и N symbols were added to koi-win conversion table.
*) Bugfix: if nginx distributed the requests among several backends and
some backend failed, then requests intended for this backend was
directed to one live backend only instead of being distributed among
the rest.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Sat, 06 May 2006 00:00:00 +0400 |
parents | 4cd3e70c4d60 |
children | 56688ed172c8 |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_http.h> #define NGX_HTTP_AUTH_BUF_SIZE 2048 typedef struct { ngx_str_t passwd; } ngx_http_auth_basic_ctx_t; typedef struct { ngx_str_t realm; ngx_str_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_http_auth_basic_ctx_t *ctx, 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_close(ngx_file_t *file); 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_cycle_t *cycle); static char *ngx_http_auth_basic(ngx_conf_t *cf, void *post, void *data); static ngx_conf_post_handler_pt ngx_http_auth_basic_p = ngx_http_auth_basic; 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_conf_set_str_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_auth_basic_loc_conf_t, realm), &ngx_http_auth_basic_p }, { 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_conf_set_str_slot, NGX_HTTP_LOC_CONF_OFFSET, offsetof(ngx_http_auth_basic_loc_conf_t, user_file), NULL }, ngx_null_command }; ngx_http_module_t ngx_http_auth_basic_module_ctx = { NULL, /* preconfiguration */ NULL, /* 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 */ ngx_http_auth_basic_init, /* 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_str_t pwd; ngx_uint_t i, login, left, passwd; ngx_file_t file; ngx_http_auth_basic_ctx_t *ctx; 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.len == 0 || alcf->user_file.len == 0) { return NGX_OK; } ctx = ngx_http_get_module_ctx(r, ngx_http_auth_basic_module); if (ctx) { return ngx_http_auth_basic_crypt_handler(r, ctx, &ctx->passwd, &alcf->realm); } rc = ngx_http_auth_basic_user(r); if (rc == NGX_DECLINED) { return ngx_http_auth_basic_set_realm(r, &alcf->realm); } if (rc == NGX_ERROR) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } fd = ngx_open_file(alcf->user_file.data, NGX_FILE_RDONLY, NGX_FILE_OPEN); if (fd == NGX_INVALID_FILE) { ngx_log_error(NGX_LOG_ERR, r->connection->log, ngx_errno, ngx_open_file_n " \"%s\" failed", alcf->user_file.data); return NGX_HTTP_INTERNAL_SERVER_ERROR; } ngx_memzero(&file, sizeof(ngx_file_t)); file.fd = fd; file.name = alcf->user_file; file.log = r->connection->log; state = sw_login; passwd = 0; login = 0; left = 0; offset = 0; for ( ;; ) { n = ngx_read_file(&file, buf + left, NGX_HTTP_AUTH_BUF_SIZE - left, offset); if (n == NGX_ERROR) { ngx_http_auth_basic_close(&file); return NGX_HTTP_INTERNAL_SERVER_ERROR; } if (n == 0) { break; } for (i = left; i < left + n; i++) { switch (state) { case sw_login: if (login == 0 && buf[i] == '#') { state = sw_skip; 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'; ngx_http_auth_basic_close(&file); pwd.len = i - passwd; pwd.data = &buf[passwd]; return ngx_http_auth_basic_crypt_handler(r, NULL, &pwd, &alcf->realm); } break; case sw_skip: if (buf[i] == LF) { state = sw_login; login = 0; } break; } } if (state == sw_passwd) { left = left + n - passwd; ngx_memcpy(buf, &buf[passwd], left); passwd = 0; } else { left = 0; } offset += n; } ngx_http_auth_basic_close(&file); return ngx_http_auth_basic_set_realm(r, &alcf->realm); } static ngx_int_t ngx_http_auth_basic_crypt_handler(ngx_http_request_t *r, ngx_http_auth_basic_ctx_t *ctx, 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: %d user: \"%V\" salt: \"%s\"", rc, &r->headers_in.user, passwd->data); if (rc == NGX_OK) { if (ngx_strcmp(encrypted, passwd->data) == 0) { return NGX_OK; } ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "encrypted: \"%s\"", encrypted); return ngx_http_auth_basic_set_realm(r, realm); } if (rc == NGX_ERROR) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } /* rc == NGX_AGAIN */ if (ctx == NULL) { ctx = ngx_palloc(r->pool, sizeof(ngx_http_auth_basic_ctx_t)); if (ctx == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } ngx_http_set_ctx(r, ctx, ngx_http_auth_basic_module); ctx->passwd.len = passwd->len; passwd->len++; ctx->passwd.data = ngx_pstrdup(r->pool, passwd); if (ctx->passwd.data == NULL) { return NGX_HTTP_INTERNAL_SERVER_ERROR; } } /* TODO: add mutex event */ return rc; } static ngx_int_t ngx_http_auth_basic_set_realm(ngx_http_request_t *r, ngx_str_t *realm) { 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; } r->headers_out.www_authenticate->hash = 1; r->headers_out.www_authenticate->key.len = sizeof("WWW-Authenticate") - 1; r->headers_out.www_authenticate->key.data = (u_char *) "WWW-Authenticate"; r->headers_out.www_authenticate->value = *realm; return NGX_HTTP_UNAUTHORIZED; } static void ngx_http_auth_basic_close(ngx_file_t *file) { if (ngx_close_file(file->fd) == NGX_FILE_ERROR) { ngx_log_error(NGX_LOG_ALERT, file->log, ngx_errno, ngx_close_file_n " \"%s\" failed", file->name.data); } } 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 NGX_CONF_ERROR; } 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.data == NULL) { conf->realm = prev->realm; } if (conf->user_file.data) { if (ngx_conf_full_name(cf->cycle, &conf->user_file) != NGX_OK) { return NGX_CONF_ERROR; } } else { conf->user_file = prev->user_file; } return NGX_CONF_OK; } static ngx_int_t ngx_http_auth_basic_init(ngx_cycle_t *cycle) { ngx_http_handler_pt *h; ngx_http_core_main_conf_t *cmcf; cmcf = ngx_http_cycle_get_module_main_conf(cycle, 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(ngx_conf_t *cf, void *post, void *data) { ngx_str_t *realm = data; size_t len; u_char *basic, *p; if (ngx_strcmp(realm->data, "off") == 0) { realm->len = 0; realm->data = (u_char *) ""; return NGX_CONF_OK; } len = sizeof("Basic realm=\"") - 1 + realm->len + 1; basic = ngx_palloc(cf->pool, len); if (basic == NULL) { return NGX_CONF_ERROR; } p = ngx_cpymem(basic, "Basic realm=\"", sizeof("Basic realm=\"") - 1); p = ngx_cpymem(p, realm->data, realm->len); *p = '"'; realm->len = len; realm->data = basic; return NGX_CONF_OK; }