mirror of
https://github.com/servalproject/serval-dna.git
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249 lines
6.9 KiB
C
249 lines
6.9 KiB
C
/*
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Serval DNA instance paths
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Copyright (C) 2012-2015 Serval Project Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include "instance.h"
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#include "str.h"
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#include "os.h"
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#include "strbuf.h"
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#include "strbuf_helpers.h"
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/*
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* A default INSTANCE_PATH can be set on the ./configure command line, eg:
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*
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* ./configure INSTANCE_PATH=/var/local/serval/node
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*
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* This will cause servald to never use FHS paths, and always use an instance path, even if the
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* SERVALINSTANCE_PATH environment variable is not set.
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*
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* On Android systems, the INSTANCE_PATH macro is set in Android.mk, so Android builds of servald
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* always use an instance path and never fall back to FHS paths.
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*/
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#ifdef ANDROID
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# define SERVAL_ETC_PATH ""
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# define SERVAL_RUN_PATH ""
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# define SYSTEM_LOG_PATH ""
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# define SERVAL_LOG_PATH ""
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# define SERVAL_CACHE_PATH ""
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# define SERVAL_TMP_PATH ""
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# define RHIZOME_STORE_PATH ""
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#endif
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/* The following paths are based on the Filesystem Hierarchy Standard (FHS) 2.3
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* but can be altered using ./configure arguments, eg:
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*
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* ./configure SERVAL_LOG_PATH=/tmp/serval/log
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*/
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#ifndef SERVAL_ETC_PATH
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#define SERVAL_ETC_PATH SYSCONFDIR "/serval"
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#endif
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#ifndef SERVAL_RUN_PATH
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#define SERVAL_RUN_PATH LOCALSTATEDIR "/run/serval"
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#endif
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#ifndef SYSTEM_LOG_PATH
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#define SYSTEM_LOG_PATH LOCALSTATEDIR "/log"
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#endif
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#ifndef SERVAL_LOG_PATH
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#define SERVAL_LOG_PATH SYSTEM_LOG_PATH "/serval"
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#endif
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#ifndef SERVAL_CACHE_PATH
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#define SERVAL_CACHE_PATH LOCALSTATEDIR "/cache/serval"
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#endif
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#ifndef SERVAL_TMP_PATH
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#define SERVAL_TMP_PATH "/tmp/serval"
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#endif
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#ifndef RHIZOME_STORE_PATH
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#define RHIZOME_STORE_PATH SERVAL_CACHE_PATH
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#endif
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static int know_instancepath = 0;
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static char *instancepath = NULL;
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const char *instance_path()
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{
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if (!know_instancepath) {
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instancepath = getenv("SERVALINSTANCE_PATH");
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#ifdef INSTANCE_PATH
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if (instancepath == NULL)
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instancepath = INSTANCE_PATH;
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#endif
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know_instancepath = 1;
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}
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return instancepath;
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}
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void set_instance_path(const char *path)
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{
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instancepath = strdup(path);
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know_instancepath = 1;
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}
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static int vformf_basepath(struct __sourceloc __whence, strbuf b, const char *basepath, const char *fmt, va_list ap)
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{
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if (fmt)
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strbuf_va_vprintf(b, fmt, ap);
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if (!strbuf_overrun(b) && (strbuf_len(b) == 0 || strbuf_str(b)[0] != '/')) {
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strbuf_reset(b);
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strbuf_puts(b, basepath);
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if (fmt) {
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if (strbuf_substr(b, -1)[0] != '/')
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strbuf_putc(b, '/');
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strbuf_va_vprintf(b, fmt, ap);
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}
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}
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if (!strbuf_overrun(b))
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return 1;
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WHYF("instance path overflow (strlen %lu, sizeof buffer %lu): %s",
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(unsigned long)strbuf_count(b),
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(unsigned long)strbuf_size(b),
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alloca_str_toprint(strbuf_str(b)));
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return 0;
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}
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int _formf_path(struct __sourceloc __whence, char *buf, size_t bufsiz, const char *basepath, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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int ret = vformf_basepath(__whence, strbuf_local(buf, bufsiz), basepath, fmt, ap);
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va_end(ap);
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return ret;
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}
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static int vformf_path(struct __sourceloc __whence, strbuf b, const char *syspath, const char *fmt, va_list ap)
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{
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const char *ipath = instance_path();
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if (!ipath)
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ipath=syspath;
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return vformf_basepath(__whence, b, ipath, fmt, ap);
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}
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int _formf_serval_etc_path(struct __sourceloc __whence, char *buf, size_t bufsiz, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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int ret = vformf_path(__whence, strbuf_local(buf, bufsiz), SERVAL_ETC_PATH, fmt, ap);
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va_end(ap);
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return ret;
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}
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int _formf_serval_run_path(struct __sourceloc __whence, char *buf, size_t bufsiz, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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int ret = _vformf_serval_run_path(__whence, buf, bufsiz, fmt, ap);
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va_end(ap);
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return ret;
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}
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int _vformf_serval_run_path(struct __sourceloc __whence, char *buf, size_t bufsiz, const char *fmt, va_list ap)
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{
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return vformf_path(__whence, strbuf_local(buf, bufsiz), SERVAL_RUN_PATH, fmt, ap);
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}
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strbuf strbuf_system_log_path(strbuf sb)
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{
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const char *ipath = instance_path();
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strbuf_puts(sb, ipath ? ipath : SYSTEM_LOG_PATH);
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return sb;
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}
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strbuf strbuf_serval_log_path(strbuf sb)
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{
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const char *ipath = instance_path();
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if (ipath)
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strbuf_path_join(sb, ipath, "log", NULL);
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else
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strbuf_puts(sb, SERVAL_LOG_PATH);
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return sb;
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}
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int _formf_serval_cache_path(struct __sourceloc __whence, char *buf, size_t bufsiz, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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int ret = vformf_path(__whence, strbuf_local(buf, bufsiz), SERVAL_CACHE_PATH, fmt, ap);
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va_end(ap);
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return ret;
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}
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int _formf_rhizome_store_path(struct __sourceloc __whence, char *buf, size_t bufsiz, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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int ret = vformf_path(__whence, strbuf_local(buf, bufsiz), RHIZOME_STORE_PATH, fmt, ap);
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va_end(ap);
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return ret;
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}
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int _formf_serval_tmp_path(struct __sourceloc __whence, char *buf, size_t bufsiz, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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int ret = vformf_path(__whence, strbuf_local(buf, bufsiz), SERVAL_TMP_PATH, fmt, ap);
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va_end(ap);
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return ret;
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}
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int _formf_servald_proc_path(struct __sourceloc __whence, char *buf, size_t bufsiz, const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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int ret = vformf_path(__whence, strbuf_local(buf, bufsiz), SERVAL_RUN_PATH "/proc", fmt, ap);
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va_end(ap);
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return ret;
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}
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int create_serval_instance_dir()
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{
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int ret = 0;
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char path[PATH_MAX];
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// emkdire_info can log if paths don't exist, which will also try to create paths...
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// so try to create logging folders first
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strbuf sb = strbuf_local_buf(path);
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strbuf_system_log_path(sb);
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if (!strbuf_overrun(sb) && emkdirs_info(path, 0700) == -1)
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ret = -1;
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strbuf_reset(sb);
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strbuf_serval_log_path(sb);
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if (!strbuf_overrun(sb) && emkdirs_info(path, 0700) == -1)
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ret = -1;
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if (FORMF_SERVAL_ETC_PATH(path, NULL) && emkdirs_info(path, 0755) == -1)
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ret = -1;
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if (FORMF_SERVAL_RUN_PATH(path, NULL) && emkdirs_info(path, 0700) == -1)
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ret = -1;
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if (FORMF_SERVAL_CACHE_PATH(path, NULL) && emkdirs_info(path, 0700) == -1)
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ret = -1;
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if (FORMF_SERVAL_TMP_PATH(path, NULL) && emkdirs_info(path, 0700) == -1)
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ret = -1;
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if (FORMF_SERVALD_PROC_PATH(path, NULL) && emkdirs_info(path, 0755) == -1)
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ret = -1;
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return ret;
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}
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