dilim/systemd
1
0
Fork 0
mirror of https://github.com/systemd/systemd.git synced 2026-08-04 15:10:33 +00:00
Code Issues Packages Projects Releases Wiki Activity

hostname-util: add new helper split_user_at_host()

Browse Source 
Let's introduce a common helper for splitting user@host specifications
like we use them for --machine=.
This commit is contained in:
Lennart Poettering
2025-06-05 11:17:22 +02:00
parent 770489c1e0
commit 4295c0db5f
3 changed files with 62 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
src/basic/hostname-util.c
View File

@@ -172,3 +172,36 @@ int get_pretty_hostname(char **ret) {
*ret = TAKE_PTR(n);
return 0;
}
int split_user_at_host(const char *s, char **ret_user, char **ret_host) {
_cleanup_free_ char *u = NULL, *h = NULL;
/* Splits a user@host expression (one of those we accept on --machine= and similar). Returns NULL in
* each of the two return parameters if that part was left empty. */
const char *rhs = strchr(s, '@');
if (rhs) {
if (ret_user && rhs > s) {
u = strndup(s, rhs - s);
if (!u)
return -ENOMEM;
}
if (ret_host && rhs[1] != 0) {
h = strdup(rhs + 1);
if (!h)
return -ENOMEM;
}
} else if (!isempty(s) && ret_host) {
h = strdup(s);
if (!h)
return -ENOMEM;
}
if (ret_user)
*ret_user = TAKE_PTR(u);
if (ret_host)
*ret_host = TAKE_PTR(h);
return !!rhs; /* return > 0 if '@' was specified, 0 otherwise */
}

2
src/basic/hostname-util.h
View File

@@ -38,3 +38,5 @@ static inline bool is_dns_proxy_stub_hostname(const char *hostname) {
}
int get_pretty_hostname(char **ret);
int split_user_at_host(const char *s, char **ret_user, char **ret_host);