git/version.c

164 lines
3.4 KiB
C

#define USE_THE_REPOSITORY_VARIABLE
#include "git-compat-util.h"
#include "version.h"
#include "version-def.h"
#include "strbuf.h"
#include "gettext.h"
#include "config.h"
#include "run-command.h"
#include "alias.h"
const char git_version_string[] = GIT_VERSION;
const char git_built_from_commit_string[] = GIT_BUILT_FROM_COMMIT;
/*
* Trim and replace each character with ascii code below 32 or above
* 127 (included) using a dot '.' character.
* TODO: ensure consecutive non-printable characters are only replaced once
*/
static void redact_non_printables(struct strbuf *buf)
{
strbuf_trim(buf);
for (size_t i = 0; i < buf->len; i++) {
if (buf->buf[i] <= 32 || buf->buf[i] >= 127)
buf->buf[i] = '.';
}
}
const char *git_user_agent(void)
{
static const char *agent = NULL;
if (!agent) {
agent = getenv("GIT_USER_AGENT");
if (!agent)
agent = GIT_USER_AGENT;
}
return agent;
}
const char *git_user_agent_sanitized(void)
{
static const char *agent = NULL;
if (!agent) {
struct strbuf buf = STRBUF_INIT;
strbuf_addstr(&buf, git_user_agent());
redact_non_printables(&buf);
agent = strbuf_detach(&buf, NULL);
}
return agent;
}
int get_uname_info(struct strbuf *buf, unsigned int full)
{
struct utsname uname_info;
if (uname(&uname_info)) {
strbuf_addf(buf, _("uname() failed with error '%s' (%d)\n"),
strerror(errno),
errno);
return -1;
}
if (full)
strbuf_addf(buf, "%s %s %s %s\n",
uname_info.sysname,
uname_info.release,
uname_info.version,
uname_info.machine);
else
strbuf_addf(buf, "%s\n", uname_info.sysname);
return 0;
}
/*
* Return -1 if unable to retrieve the osversion.command config or
* if the command is malformed; otherwise, return 0 if successful.
*/
static int fill_os_version_command(struct child_process *cmd)
{
const char *os_version_command;
const char **argv;
char *os_version_copy;
int n;
if (git_config_get_string_tmp("osversion.command", &os_version_command))
return -1;
os_version_copy = xstrdup(os_version_command);
n = split_cmdline(os_version_copy, &argv);
if (n < 0) {
warning(_("malformed osVersion.command config option: %s"),
_(split_cmdline_strerror(n)));
free(os_version_copy);
return -1;
}
for (int i = 0; i < n; i++)
strvec_push(&cmd->args, argv[i]);
free(os_version_copy);
free(argv);
return 0;
}
static int capture_os_version(struct strbuf *buf)
{
struct child_process cmd = CHILD_PROCESS_INIT;
if (fill_os_version_command(&cmd))
return -1;
if (capture_command(&cmd, buf, 0))
return -1;
return 0;
}
const char *os_version(void)
{
static const char *os = NULL;
if (!os) {
struct strbuf buf = STRBUF_INIT;
if (capture_os_version(&buf))
get_uname_info(&buf, 0);
os = strbuf_detach(&buf, NULL);
}
return os;
}
const char *os_version_sanitized(void)
{
static const char *os_sanitized = NULL;
if (!os_sanitized) {
struct strbuf buf = STRBUF_INIT;
strbuf_addstr(&buf, os_version());
redact_non_printables(&buf);
os_sanitized = strbuf_detach(&buf, NULL);
}
return os_sanitized;
}
int advertise_os_version(struct repository *r)
{
static int transfer_advertise_os_version = -1;
if (transfer_advertise_os_version == -1) {
repo_config_get_bool(r, "transfer.advertiseosversion", &transfer_advertise_os_version);
/* enabled by default */
transfer_advertise_os_version = !!transfer_advertise_os_version;
}
return transfer_advertise_os_version;
}