| |
| /* |
| * Copyright (C) Igor Sysoev |
| * Copyright (C) Nginx, Inc. |
| */ |
| |
| |
| #include <ngx_config.h> |
| #include <ngx_core.h> |
| |
| |
| static ngx_int_t ngx_test_full_name(ngx_str_t *name); |
| |
| |
| static ngx_atomic_t temp_number = 0; |
| ngx_atomic_t *ngx_temp_number = &temp_number; |
| ngx_atomic_int_t ngx_random_number = 123456; |
| |
| |
| ngx_int_t |
| ngx_get_full_name(ngx_pool_t *pool, ngx_str_t *prefix, ngx_str_t *name) |
| { |
| size_t len; |
| u_char *p, *n; |
| ngx_int_t rc; |
| |
| rc = ngx_test_full_name(name); |
| |
| if (rc == NGX_OK) { |
| return rc; |
| } |
| |
| len = prefix->len; |
| |
| #if (NGX_WIN32) |
| |
| if (rc == 2) { |
| len = rc; |
| } |
| |
| #endif |
| |
| n = ngx_pnalloc(pool, len + name->len + 1); |
| if (n == NULL) { |
| return NGX_ERROR; |
| } |
| |
| p = ngx_cpymem(n, prefix->data, len); |
| ngx_cpystrn(p, name->data, name->len + 1); |
| |
| name->len += len; |
| name->data = n; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_test_full_name(ngx_str_t *name) |
| { |
| #if (NGX_WIN32) |
| u_char c0, c1; |
| |
| c0 = name->data[0]; |
| |
| if (name->len < 2) { |
| if (c0 == '/') { |
| return 2; |
| } |
| |
| return NGX_DECLINED; |
| } |
| |
| c1 = name->data[1]; |
| |
| if (c1 == ':') { |
| c0 |= 0x20; |
| |
| if ((c0 >= 'a' && c0 <= 'z')) { |
| return NGX_OK; |
| } |
| |
| return NGX_DECLINED; |
| } |
| |
| if (c1 == '/') { |
| return NGX_OK; |
| } |
| |
| if (c0 == '/') { |
| return 2; |
| } |
| |
| return NGX_DECLINED; |
| |
| #else |
| |
| if (name->data[0] == '/') { |
| return NGX_OK; |
| } |
| |
| return NGX_DECLINED; |
| |
| #endif |
| } |
| |
| |
| ssize_t |
| ngx_write_chain_to_temp_file(ngx_temp_file_t *tf, ngx_chain_t *chain) |
| { |
| ngx_int_t rc; |
| |
| if (tf->file.fd == NGX_INVALID_FILE) { |
| rc = ngx_create_temp_file(&tf->file, tf->path, tf->pool, |
| tf->persistent, tf->clean, tf->access); |
| |
| if (rc != NGX_OK) { |
| return rc; |
| } |
| |
| if (tf->log_level) { |
| ngx_log_error(tf->log_level, tf->file.log, 0, "%s %V", |
| tf->warn, &tf->file.name); |
| } |
| } |
| |
| #if (NGX_THREADS && NGX_HAVE_PWRITEV) |
| |
| if (tf->thread_write) { |
| return ngx_thread_write_chain_to_file(&tf->file, chain, tf->offset, |
| tf->pool); |
| } |
| |
| #endif |
| |
| return ngx_write_chain_to_file(&tf->file, chain, tf->offset, tf->pool); |
| } |
| |
| |
| ngx_int_t |
| ngx_create_temp_file(ngx_file_t *file, ngx_path_t *path, ngx_pool_t *pool, |
| ngx_uint_t persistent, ngx_uint_t clean, ngx_uint_t access) |
| { |
| size_t levels; |
| u_char *p; |
| uint32_t n; |
| ngx_err_t err; |
| ngx_str_t name; |
| ngx_uint_t prefix; |
| ngx_pool_cleanup_t *cln; |
| ngx_pool_cleanup_file_t *clnf; |
| |
| if (file->name.len) { |
| name = file->name; |
| levels = 0; |
| prefix = 1; |
| |
| } else { |
| name = path->name; |
| levels = path->len; |
| prefix = 0; |
| } |
| |
| file->name.len = name.len + 1 + levels + 10; |
| |
| file->name.data = ngx_pnalloc(pool, file->name.len + 1); |
| if (file->name.data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| #if 0 |
| for (i = 0; i < file->name.len; i++) { |
| file->name.data[i] = 'X'; |
| } |
| #endif |
| |
| p = ngx_cpymem(file->name.data, name.data, name.len); |
| |
| if (prefix) { |
| *p = '.'; |
| } |
| |
| p += 1 + levels; |
| |
| n = (uint32_t) ngx_next_temp_number(0); |
| |
| cln = ngx_pool_cleanup_add(pool, sizeof(ngx_pool_cleanup_file_t)); |
| if (cln == NULL) { |
| return NGX_ERROR; |
| } |
| |
| for ( ;; ) { |
| (void) ngx_sprintf(p, "%010uD%Z", n); |
| |
| if (!prefix) { |
| ngx_create_hashed_filename(path, file->name.data, file->name.len); |
| } |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0, |
| "hashed path: %s", file->name.data); |
| |
| file->fd = ngx_open_tempfile(file->name.data, persistent, access); |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0, |
| "temp fd:%d", file->fd); |
| |
| if (file->fd != NGX_INVALID_FILE) { |
| |
| cln->handler = clean ? ngx_pool_delete_file : ngx_pool_cleanup_file; |
| clnf = cln->data; |
| |
| clnf->fd = file->fd; |
| clnf->name = file->name.data; |
| clnf->log = pool->log; |
| |
| return NGX_OK; |
| } |
| |
| err = ngx_errno; |
| |
| if (err == NGX_EEXIST_FILE) { |
| n = (uint32_t) ngx_next_temp_number(1); |
| continue; |
| } |
| |
| if ((path->level[0] == 0) || (err != NGX_ENOPATH)) { |
| ngx_log_error(NGX_LOG_CRIT, file->log, err, |
| ngx_open_tempfile_n " \"%s\" failed", |
| file->name.data); |
| return NGX_ERROR; |
| } |
| |
| if (ngx_create_path(file, path) == NGX_ERROR) { |
| return NGX_ERROR; |
| } |
| } |
| } |
| |
| |
| void |
| ngx_create_hashed_filename(ngx_path_t *path, u_char *file, size_t len) |
| { |
| size_t i, level; |
| ngx_uint_t n; |
| |
| i = path->name.len + 1; |
| |
| file[path->name.len + path->len] = '/'; |
| |
| for (n = 0; n < NGX_MAX_PATH_LEVEL; n++) { |
| level = path->level[n]; |
| |
| if (level == 0) { |
| break; |
| } |
| |
| len -= level; |
| file[i - 1] = '/'; |
| ngx_memcpy(&file[i], &file[len], level); |
| i += level + 1; |
| } |
| } |
| |
| |
| ngx_int_t |
| ngx_create_path(ngx_file_t *file, ngx_path_t *path) |
| { |
| size_t pos; |
| ngx_err_t err; |
| ngx_uint_t i; |
| |
| pos = path->name.len; |
| |
| for (i = 0; i < NGX_MAX_PATH_LEVEL; i++) { |
| if (path->level[i] == 0) { |
| break; |
| } |
| |
| pos += path->level[i] + 1; |
| |
| file->name.data[pos] = '\0'; |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_CORE, file->log, 0, |
| "temp file: \"%s\"", file->name.data); |
| |
| if (ngx_create_dir(file->name.data, 0700) == NGX_FILE_ERROR) { |
| err = ngx_errno; |
| if (err != NGX_EEXIST) { |
| ngx_log_error(NGX_LOG_CRIT, file->log, err, |
| ngx_create_dir_n " \"%s\" failed", |
| file->name.data); |
| return NGX_ERROR; |
| } |
| } |
| |
| file->name.data[pos] = '/'; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| ngx_err_t |
| ngx_create_full_path(u_char *dir, ngx_uint_t access) |
| { |
| u_char *p, ch; |
| ngx_err_t err; |
| |
| err = 0; |
| |
| #if (NGX_WIN32) |
| p = dir + 3; |
| #else |
| p = dir + 1; |
| #endif |
| |
| for ( /* void */ ; *p; p++) { |
| ch = *p; |
| |
| if (ch != '/') { |
| continue; |
| } |
| |
| *p = '\0'; |
| |
| if (ngx_create_dir(dir, access) == NGX_FILE_ERROR) { |
| err = ngx_errno; |
| |
| switch (err) { |
| case NGX_EEXIST: |
| err = 0; |
| case NGX_EACCES: |
| break; |
| |
| default: |
| return err; |
| } |
| } |
| |
| *p = '/'; |
| } |
| |
| return err; |
| } |
| |
| |
| ngx_atomic_uint_t |
| ngx_next_temp_number(ngx_uint_t collision) |
| { |
| ngx_atomic_uint_t n, add; |
| |
| add = collision ? ngx_random_number : 1; |
| |
| n = ngx_atomic_fetch_add(ngx_temp_number, add); |
| |
| return n + add; |
| } |
| |
| |
| char * |
| ngx_conf_set_path_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| { |
| char *p = conf; |
| |
| ssize_t level; |
| ngx_str_t *value; |
| ngx_uint_t i, n; |
| ngx_path_t *path, **slot; |
| |
| slot = (ngx_path_t **) (p + cmd->offset); |
| |
| if (*slot) { |
| return "is duplicate"; |
| } |
| |
| path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t)); |
| if (path == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| value = cf->args->elts; |
| |
| path->name = value[1]; |
| |
| if (path->name.data[path->name.len - 1] == '/') { |
| path->name.len--; |
| } |
| |
| if (ngx_conf_full_name(cf->cycle, &path->name, 0) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| path->conf_file = cf->conf_file->file.name.data; |
| path->line = cf->conf_file->line; |
| |
| for (i = 0, n = 2; n < cf->args->nelts; i++, n++) { |
| level = ngx_atoi(value[n].data, value[n].len); |
| if (level == NGX_ERROR || level == 0) { |
| return "invalid value"; |
| } |
| |
| path->level[i] = level; |
| path->len += level + 1; |
| } |
| |
| if (path->len > 10 + i) { |
| return "invalid value"; |
| } |
| |
| *slot = path; |
| |
| if (ngx_add_path(cf, slot) == NGX_ERROR) { |
| return NGX_CONF_ERROR; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| char * |
| ngx_conf_merge_path_value(ngx_conf_t *cf, ngx_path_t **path, ngx_path_t *prev, |
| ngx_path_init_t *init) |
| { |
| ngx_uint_t i; |
| |
| if (*path) { |
| return NGX_CONF_OK; |
| } |
| |
| if (prev) { |
| *path = prev; |
| return NGX_CONF_OK; |
| } |
| |
| *path = ngx_pcalloc(cf->pool, sizeof(ngx_path_t)); |
| if (*path == NULL) { |
| return NGX_CONF_ERROR; |
| } |
| |
| (*path)->name = init->name; |
| |
| if (ngx_conf_full_name(cf->cycle, &(*path)->name, 0) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| for (i = 0; i < NGX_MAX_PATH_LEVEL; i++) { |
| (*path)->level[i] = init->level[i]; |
| (*path)->len += init->level[i] + (init->level[i] ? 1 : 0); |
| } |
| |
| if (ngx_add_path(cf, path) != NGX_OK) { |
| return NGX_CONF_ERROR; |
| } |
| |
| return NGX_CONF_OK; |
| } |
| |
| |
| char * |
| ngx_conf_set_access_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) |
| { |
| char *confp = conf; |
| |
| u_char *p; |
| ngx_str_t *value; |
| ngx_uint_t i, right, shift, *access, user; |
| |
| access = (ngx_uint_t *) (confp + cmd->offset); |
| |
| if (*access != NGX_CONF_UNSET_UINT) { |
| return "is duplicate"; |
| } |
| |
| value = cf->args->elts; |
| |
| *access = 0; |
| user = 0600; |
| |
| for (i = 1; i < cf->args->nelts; i++) { |
| |
| p = value[i].data; |
| |
| if (ngx_strncmp(p, "user:", sizeof("user:") - 1) == 0) { |
| shift = 6; |
| p += sizeof("user:") - 1; |
| user = 0; |
| |
| } else if (ngx_strncmp(p, "group:", sizeof("group:") - 1) == 0) { |
| shift = 3; |
| p += sizeof("group:") - 1; |
| |
| } else if (ngx_strncmp(p, "all:", sizeof("all:") - 1) == 0) { |
| shift = 0; |
| p += sizeof("all:") - 1; |
| |
| } else { |
| goto invalid; |
| } |
| |
| if (ngx_strcmp(p, "rw") == 0) { |
| right = 6; |
| |
| } else if (ngx_strcmp(p, "r") == 0) { |
| right = 4; |
| |
| } else { |
| goto invalid; |
| } |
| |
| *access |= right << shift; |
| } |
| |
| *access |= user; |
| |
| return NGX_CONF_OK; |
| |
| invalid: |
| |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid value \"%V\"", &value[i]); |
| |
| return NGX_CONF_ERROR; |
| } |
| |
| |
| ngx_int_t |
| ngx_add_path(ngx_conf_t *cf, ngx_path_t **slot) |
| { |
| ngx_uint_t i, n; |
| ngx_path_t *path, **p; |
| |
| path = *slot; |
| |
| p = cf->cycle->paths.elts; |
| for (i = 0; i < cf->cycle->paths.nelts; i++) { |
| if (p[i]->name.len == path->name.len |
| && ngx_strcmp(p[i]->name.data, path->name.data) == 0) |
| { |
| if (p[i]->data != path->data) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "the same path name \"%V\" " |
| "used in %s:%ui and", |
| &p[i]->name, p[i]->conf_file, p[i]->line); |
| return NGX_ERROR; |
| } |
| |
| for (n = 0; n < NGX_MAX_PATH_LEVEL; n++) { |
| if (p[i]->level[n] != path->level[n]) { |
| if (path->conf_file == NULL) { |
| if (p[i]->conf_file == NULL) { |
| ngx_log_error(NGX_LOG_EMERG, cf->log, 0, |
| "the default path name \"%V\" has " |
| "the same name as another default path, " |
| "but the different levels, you need to " |
| "redefine one of them in http section", |
| &p[i]->name); |
| return NGX_ERROR; |
| } |
| |
| ngx_log_error(NGX_LOG_EMERG, cf->log, 0, |
| "the path name \"%V\" in %s:%ui has " |
| "the same name as default path, but " |
| "the different levels, you need to " |
| "define default path in http section", |
| &p[i]->name, p[i]->conf_file, p[i]->line); |
| return NGX_ERROR; |
| } |
| |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "the same path name \"%V\" in %s:%ui " |
| "has the different levels than", |
| &p[i]->name, p[i]->conf_file, p[i]->line); |
| return NGX_ERROR; |
| } |
| |
| if (p[i]->level[n] == 0) { |
| break; |
| } |
| } |
| |
| *slot = p[i]; |
| |
| return NGX_OK; |
| } |
| } |
| |
| p = ngx_array_push(&cf->cycle->paths); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| *p = path; |
| |
| return NGX_OK; |
| } |
| |
| |
| ngx_int_t |
| ngx_create_paths(ngx_cycle_t *cycle, ngx_uid_t user) |
| { |
| ngx_err_t err; |
| ngx_uint_t i; |
| ngx_path_t **path; |
| |
| path = cycle->paths.elts; |
| for (i = 0; i < cycle->paths.nelts; i++) { |
| |
| if (ngx_create_dir(path[i]->name.data, 0700) == NGX_FILE_ERROR) { |
| err = ngx_errno; |
| if (err != NGX_EEXIST) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, err, |
| ngx_create_dir_n " \"%s\" failed", |
| path[i]->name.data); |
| return NGX_ERROR; |
| } |
| } |
| |
| if (user == (ngx_uid_t) NGX_CONF_UNSET_UINT) { |
| continue; |
| } |
| |
| #if !(NGX_WIN32) |
| { |
| ngx_file_info_t fi; |
| |
| if (ngx_file_info(path[i]->name.data, &fi) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, |
| ngx_file_info_n " \"%s\" failed", path[i]->name.data); |
| return NGX_ERROR; |
| } |
| |
| if (fi.st_uid != user) { |
| if (chown((const char *) path[i]->name.data, user, -1) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, |
| "chown(\"%s\", %d) failed", |
| path[i]->name.data, user); |
| return NGX_ERROR; |
| } |
| } |
| |
| if ((fi.st_mode & (S_IRUSR|S_IWUSR|S_IXUSR)) |
| != (S_IRUSR|S_IWUSR|S_IXUSR)) |
| { |
| fi.st_mode |= (S_IRUSR|S_IWUSR|S_IXUSR); |
| |
| if (chmod((const char *) path[i]->name.data, fi.st_mode) == -1) { |
| ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno, |
| "chmod() \"%s\" failed", path[i]->name.data); |
| return NGX_ERROR; |
| } |
| } |
| } |
| #endif |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| ngx_int_t |
| ngx_ext_rename_file(ngx_str_t *src, ngx_str_t *to, ngx_ext_rename_file_t *ext) |
| { |
| u_char *name; |
| ngx_err_t err; |
| ngx_copy_file_t cf; |
| |
| #if !(NGX_WIN32) |
| |
| if (ext->access) { |
| if (ngx_change_file_access(src->data, ext->access) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_CRIT, ext->log, ngx_errno, |
| ngx_change_file_access_n " \"%s\" failed", src->data); |
| err = 0; |
| goto failed; |
| } |
| } |
| |
| #endif |
| |
| if (ext->time != -1) { |
| if (ngx_set_file_time(src->data, ext->fd, ext->time) != NGX_OK) { |
| ngx_log_error(NGX_LOG_CRIT, ext->log, ngx_errno, |
| ngx_set_file_time_n " \"%s\" failed", src->data); |
| err = 0; |
| goto failed; |
| } |
| } |
| |
| if (ngx_rename_file(src->data, to->data) != NGX_FILE_ERROR) { |
| return NGX_OK; |
| } |
| |
| err = ngx_errno; |
| |
| if (err == NGX_ENOPATH) { |
| |
| if (!ext->create_path) { |
| goto failed; |
| } |
| |
| err = ngx_create_full_path(to->data, ngx_dir_access(ext->path_access)); |
| |
| if (err) { |
| ngx_log_error(NGX_LOG_CRIT, ext->log, err, |
| ngx_create_dir_n " \"%s\" failed", to->data); |
| err = 0; |
| goto failed; |
| } |
| |
| if (ngx_rename_file(src->data, to->data) != NGX_FILE_ERROR) { |
| return NGX_OK; |
| } |
| |
| err = ngx_errno; |
| } |
| |
| #if (NGX_WIN32) |
| |
| if (err == NGX_EEXIST || err == NGX_EEXIST_FILE) { |
| err = ngx_win32_rename_file(src, to, ext->log); |
| |
| if (err == 0) { |
| return NGX_OK; |
| } |
| } |
| |
| #endif |
| |
| if (err == NGX_EXDEV) { |
| |
| cf.size = -1; |
| cf.buf_size = 0; |
| cf.access = ext->access; |
| cf.time = ext->time; |
| cf.log = ext->log; |
| |
| name = ngx_alloc(to->len + 1 + 10 + 1, ext->log); |
| if (name == NULL) { |
| return NGX_ERROR; |
| } |
| |
| (void) ngx_sprintf(name, "%*s.%010uD%Z", to->len, to->data, |
| (uint32_t) ngx_next_temp_number(0)); |
| |
| if (ngx_copy_file(src->data, name, &cf) == NGX_OK) { |
| |
| if (ngx_rename_file(name, to->data) != NGX_FILE_ERROR) { |
| ngx_free(name); |
| |
| if (ngx_delete_file(src->data) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_CRIT, ext->log, ngx_errno, |
| ngx_delete_file_n " \"%s\" failed", |
| src->data); |
| return NGX_ERROR; |
| } |
| |
| return NGX_OK; |
| } |
| |
| ngx_log_error(NGX_LOG_CRIT, ext->log, ngx_errno, |
| ngx_rename_file_n " \"%s\" to \"%s\" failed", |
| name, to->data); |
| |
| if (ngx_delete_file(name) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_CRIT, ext->log, ngx_errno, |
| ngx_delete_file_n " \"%s\" failed", name); |
| |
| } |
| } |
| |
| ngx_free(name); |
| |
| err = 0; |
| } |
| |
| failed: |
| |
| if (ext->delete_file) { |
| if (ngx_delete_file(src->data) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_CRIT, ext->log, ngx_errno, |
| ngx_delete_file_n " \"%s\" failed", src->data); |
| } |
| } |
| |
| if (err) { |
| ngx_log_error(NGX_LOG_CRIT, ext->log, err, |
| ngx_rename_file_n " \"%s\" to \"%s\" failed", |
| src->data, to->data); |
| } |
| |
| return NGX_ERROR; |
| } |
| |
| |
| ngx_int_t |
| ngx_copy_file(u_char *from, u_char *to, ngx_copy_file_t *cf) |
| { |
| char *buf; |
| off_t size; |
| time_t time; |
| size_t len; |
| ssize_t n; |
| ngx_fd_t fd, nfd; |
| ngx_int_t rc; |
| ngx_uint_t access; |
| ngx_file_info_t fi; |
| |
| rc = NGX_ERROR; |
| buf = NULL; |
| nfd = NGX_INVALID_FILE; |
| |
| fd = ngx_open_file(from, NGX_FILE_RDONLY, NGX_FILE_OPEN, 0); |
| |
| if (fd == NGX_INVALID_FILE) { |
| ngx_log_error(NGX_LOG_CRIT, cf->log, ngx_errno, |
| ngx_open_file_n " \"%s\" failed", from); |
| goto failed; |
| } |
| |
| if (cf->size != -1 && cf->access != 0 && cf->time != -1) { |
| size = cf->size; |
| access = cf->access; |
| time = cf->time; |
| |
| } else { |
| if (ngx_fd_info(fd, &fi) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno, |
| ngx_fd_info_n " \"%s\" failed", from); |
| |
| goto failed; |
| } |
| |
| size = (cf->size != -1) ? cf->size : ngx_file_size(&fi); |
| access = cf->access ? cf->access : ngx_file_access(&fi); |
| time = (cf->time != -1) ? cf->time : ngx_file_mtime(&fi); |
| } |
| |
| len = cf->buf_size ? cf->buf_size : 65536; |
| |
| if ((off_t) len > size) { |
| len = (size_t) size; |
| } |
| |
| buf = ngx_alloc(len, cf->log); |
| if (buf == NULL) { |
| goto failed; |
| } |
| |
| nfd = ngx_open_file(to, NGX_FILE_WRONLY, NGX_FILE_TRUNCATE, access); |
| |
| if (nfd == NGX_INVALID_FILE) { |
| ngx_log_error(NGX_LOG_CRIT, cf->log, ngx_errno, |
| ngx_open_file_n " \"%s\" failed", to); |
| goto failed; |
| } |
| |
| while (size > 0) { |
| |
| if ((off_t) len > size) { |
| len = (size_t) size; |
| } |
| |
| n = ngx_read_fd(fd, buf, len); |
| |
| if (n == -1) { |
| ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno, |
| ngx_read_fd_n " \"%s\" failed", from); |
| goto failed; |
| } |
| |
| if ((size_t) n != len) { |
| ngx_log_error(NGX_LOG_ALERT, cf->log, 0, |
| ngx_read_fd_n " has read only %z of %O from %s", |
| n, size, from); |
| goto failed; |
| } |
| |
| n = ngx_write_fd(nfd, buf, len); |
| |
| if (n == -1) { |
| ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno, |
| ngx_write_fd_n " \"%s\" failed", to); |
| goto failed; |
| } |
| |
| if ((size_t) n != len) { |
| ngx_log_error(NGX_LOG_ALERT, cf->log, 0, |
| ngx_write_fd_n " has written only %z of %O to %s", |
| n, size, to); |
| goto failed; |
| } |
| |
| size -= n; |
| } |
| |
| if (ngx_set_file_time(to, nfd, time) != NGX_OK) { |
| ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno, |
| ngx_set_file_time_n " \"%s\" failed", to); |
| goto failed; |
| } |
| |
| rc = NGX_OK; |
| |
| failed: |
| |
| if (nfd != NGX_INVALID_FILE) { |
| if (ngx_close_file(nfd) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno, |
| ngx_close_file_n " \"%s\" failed", to); |
| } |
| } |
| |
| if (fd != NGX_INVALID_FILE) { |
| if (ngx_close_file(fd) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_ALERT, cf->log, ngx_errno, |
| ngx_close_file_n " \"%s\" failed", from); |
| } |
| } |
| |
| if (buf) { |
| ngx_free(buf); |
| } |
| |
| return rc; |
| } |
| |
| |
| /* |
| * ctx->init_handler() - see ctx->alloc |
| * ctx->file_handler() - file handler |
| * ctx->pre_tree_handler() - handler is called before entering directory |
| * ctx->post_tree_handler() - handler is called after leaving directory |
| * ctx->spec_handler() - special (socket, FIFO, etc.) file handler |
| * |
| * ctx->data - some data structure, it may be the same on all levels, or |
| * reallocated if ctx->alloc is nonzero |
| * |
| * ctx->alloc - a size of data structure that is allocated at every level |
| * and is initialized by ctx->init_handler() |
| * |
| * ctx->log - a log |
| * |
| * on fatal (memory) error handler must return NGX_ABORT to stop walking tree |
| */ |
| |
| ngx_int_t |
| ngx_walk_tree(ngx_tree_ctx_t *ctx, ngx_str_t *tree) |
| { |
| void *data, *prev; |
| u_char *p, *name; |
| size_t len; |
| ngx_int_t rc; |
| ngx_err_t err; |
| ngx_str_t file, buf; |
| ngx_dir_t dir; |
| |
| ngx_str_null(&buf); |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0, |
| "walk tree \"%V\"", tree); |
| |
| if (ngx_open_dir(tree, &dir) == NGX_ERROR) { |
| ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, |
| ngx_open_dir_n " \"%s\" failed", tree->data); |
| return NGX_ERROR; |
| } |
| |
| prev = ctx->data; |
| |
| if (ctx->alloc) { |
| data = ngx_alloc(ctx->alloc, ctx->log); |
| if (data == NULL) { |
| goto failed; |
| } |
| |
| if (ctx->init_handler(data, prev) == NGX_ABORT) { |
| goto failed; |
| } |
| |
| ctx->data = data; |
| |
| } else { |
| data = NULL; |
| } |
| |
| for ( ;; ) { |
| |
| ngx_set_errno(0); |
| |
| if (ngx_read_dir(&dir) == NGX_ERROR) { |
| err = ngx_errno; |
| |
| if (err == NGX_ENOMOREFILES) { |
| rc = NGX_OK; |
| |
| } else { |
| ngx_log_error(NGX_LOG_CRIT, ctx->log, err, |
| ngx_read_dir_n " \"%s\" failed", tree->data); |
| rc = NGX_ERROR; |
| } |
| |
| goto done; |
| } |
| |
| len = ngx_de_namelen(&dir); |
| name = ngx_de_name(&dir); |
| |
| ngx_log_debug2(NGX_LOG_DEBUG_CORE, ctx->log, 0, |
| "tree name %uz:\"%s\"", len, name); |
| |
| if (len == 1 && name[0] == '.') { |
| continue; |
| } |
| |
| if (len == 2 && name[0] == '.' && name[1] == '.') { |
| continue; |
| } |
| |
| file.len = tree->len + 1 + len; |
| |
| if (file.len > buf.len) { |
| |
| if (buf.len) { |
| ngx_free(buf.data); |
| } |
| |
| buf.len = tree->len + 1 + len; |
| |
| buf.data = ngx_alloc(buf.len + 1, ctx->log); |
| if (buf.data == NULL) { |
| goto failed; |
| } |
| } |
| |
| p = ngx_cpymem(buf.data, tree->data, tree->len); |
| *p++ = '/'; |
| ngx_memcpy(p, name, len + 1); |
| |
| file.data = buf.data; |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0, |
| "tree path \"%s\"", file.data); |
| |
| if (!dir.valid_info) { |
| if (ngx_de_info(file.data, &dir) == NGX_FILE_ERROR) { |
| ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, |
| ngx_de_info_n " \"%s\" failed", file.data); |
| continue; |
| } |
| } |
| |
| if (ngx_de_is_file(&dir)) { |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0, |
| "tree file \"%s\"", file.data); |
| |
| ctx->size = ngx_de_size(&dir); |
| ctx->fs_size = ngx_de_fs_size(&dir); |
| ctx->access = ngx_de_access(&dir); |
| ctx->mtime = ngx_de_mtime(&dir); |
| |
| if (ctx->file_handler(ctx, &file) == NGX_ABORT) { |
| goto failed; |
| } |
| |
| } else if (ngx_de_is_dir(&dir)) { |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0, |
| "tree enter dir \"%s\"", file.data); |
| |
| ctx->access = ngx_de_access(&dir); |
| ctx->mtime = ngx_de_mtime(&dir); |
| |
| rc = ctx->pre_tree_handler(ctx, &file); |
| |
| if (rc == NGX_ABORT) { |
| goto failed; |
| } |
| |
| if (rc == NGX_DECLINED) { |
| ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0, |
| "tree skip dir \"%s\"", file.data); |
| continue; |
| } |
| |
| if (ngx_walk_tree(ctx, &file) == NGX_ABORT) { |
| goto failed; |
| } |
| |
| ctx->access = ngx_de_access(&dir); |
| ctx->mtime = ngx_de_mtime(&dir); |
| |
| if (ctx->post_tree_handler(ctx, &file) == NGX_ABORT) { |
| goto failed; |
| } |
| |
| } else { |
| |
| ngx_log_debug1(NGX_LOG_DEBUG_CORE, ctx->log, 0, |
| "tree special \"%s\"", file.data); |
| |
| if (ctx->spec_handler(ctx, &file) == NGX_ABORT) { |
| goto failed; |
| } |
| } |
| } |
| |
| failed: |
| |
| rc = NGX_ABORT; |
| |
| done: |
| |
| if (buf.len) { |
| ngx_free(buf.data); |
| } |
| |
| if (data) { |
| ngx_free(data); |
| ctx->data = prev; |
| } |
| |
| if (ngx_close_dir(&dir) == NGX_ERROR) { |
| ngx_log_error(NGX_LOG_CRIT, ctx->log, ngx_errno, |
| ngx_close_dir_n " \"%s\" failed", tree->data); |
| } |
| |
| return rc; |
| } |
