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module/script: path: expand ‘~’ to the user’s $HOME directory

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Closes #307
This commit is contained in:
Daniel Eklöf 2023-07-11 08:27:41 +02:00
parent d6e7710a7e
commit 8e4d7f04e4
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GPG key ID: 5BBD4992C116573F
3 changed files with 32 additions and 7 deletions
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35
modules/script.c
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@ -631,11 +631,11 @@ run(struct module *mod)
}
static struct module *
script_new(const char *path, size_t argc, const char *const argv[static argc],
script_new(char *path, size_t argc, const char *const argv[static argc],
int poll_interval, struct particle *_content)
{
struct private *m = calloc(1, sizeof(*m));
m->path = strdup(path);
m->path = path;
m->content = _content;
m->argc = argc;
m->argv = malloc(argc * sizeof(m->argv[0]));
@ -655,7 +655,7 @@ script_new(const char *path, size_t argc, const char *const argv[static argc],
static struct module *
from_conf(const struct yml_node *node, struct conf_inherit inherited)
{
const struct yml_node *path = yml_get_value(node, "path");
const struct yml_node *path_node = yml_get_value(node, "path");
const struct yml_node *args = yml_get_value(node, "args");
const struct yml_node *c = yml_get_value(node, "content");
const struct yml_node *poll_interval = yml_get_value(node, "poll-interval");
@ -673,8 +673,26 @@ from_conf(const struct yml_node *node, struct conf_inherit inherited)
}
}
const char *yml_path = yml_value_as_string(path_node);
char *path = NULL;
if (yml_path[0] == '~' && yml_path[1] == '/') {
const char *home_dir = getenv("HOME");
if (home_dir == NULL) {
LOG_ERRNO("failed to expand '~");
return NULL;
}
if (asprintf(&path, "%s/%s", home_dir, yml_path + 2) < 0) {
LOG_ERRNO("failed to expand '~");
return NULL;
}
} else
path = strdup(yml_path);
return script_new(
yml_value_as_string(path), argc, argv,
path, argc, argv,
poll_interval != NULL ? yml_value_as_int(poll_interval) : 0,
conf_to_particle(c, inherited));
}
@ -686,8 +704,13 @@ conf_verify_path(keychain_t *chain, const struct yml_node *node)
return false;
const char *path = yml_value_as_string(node);
if (strlen(path) < 1 || path[0] != '/') {
LOG_ERR("%s: path must be absolute", conf_err_prefix(chain, node));
const bool is_tilde = path[0] == '~' && path[1] == '/';
const bool is_absolute = path[0] == '/';
if (!is_tilde && !is_absolute) {
LOG_ERR("%s: path must either be absolute, or begin with '~/'",
conf_err_prefix(chain, node));
return false;
}