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#include <tools/ccanlint/ccanlint.h>
#include <ccan/tal/tal.h>
#include <ccan/tal/str/str.h>
#include <ccan/tal/path/path.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <err.h>
#include <ccan/str/str.h>
#include <ccan/take/take.h>
/* We might need more ../ for nested modules. */
static const char *link_prefix(struct manifest *m)
{
char *prefix = tal_strdup(m, "../../");
unsigned int i;
for (i = 0; i < strcount(m->modname, "/"); i++)
prefix = tal_strcat(m, take(prefix), "../");
return tal_strcat(m, take(prefix), "licenses/");
}
static const char *expected_link(const tal_t *ctx,
const char *prefix, enum license license)
{
const char *shortname;
switch (license) {
case LICENSE_LGPLv2_PLUS:
case LICENSE_LGPLv2:
shortname = "LGPL-2.1";
break;
case LICENSE_LGPLv3:
case LICENSE_LGPL:
shortname = "LGPL-3";
break;
case LICENSE_GPLv2_PLUS:
case LICENSE_GPLv2:
shortname = "GPL-2";
break;
case LICENSE_GPLv3:
case LICENSE_GPL:
shortname = "GPL-3";
break;
case LICENSE_BSD:
shortname = "BSD-3CLAUSE";
break;
case LICENSE_MIT:
shortname = "BSD-MIT";
break;
case LICENSE_CC0:
shortname = "CC0";
break;
default:
return NULL;
}
return tal_strcat(ctx, prefix, shortname);
}
static void handle_license_link(struct manifest *m, struct score *score)
{
struct doc_section *d = find_license_tag(m);
const char *prefix = link_prefix(m);
const char *link = path_join(m, m->dir, "LICENSE");
const char *ldest = expected_link(score, prefix, m->license);
char *q;
printf(
"Most modules want a copy of their license, so usually we create a\n"
"LICENSE symlink into %s to avoid too many copies.\n", prefix);
/* FIXME: make ask printf-like */
q = tal_fmt(m, "Set up link to %s (license is %s)?",
ldest, d->lines[0]);
if (ask(q)) {
if (symlink(ldest, link) != 0)
err(1, "Creating symlink %s -> %s", link, ldest);
}
}
extern struct ccanlint license_exists;
static void check_has_license(struct manifest *m,
unsigned int *timeleft, struct score *score)
{
char buf[PATH_MAX];
ssize_t len;
char *license = path_join(m, m->dir, "LICENSE");
const char *expected;
struct doc_section *d;
const char *prefix = link_prefix(m);
d = find_license_tag(m);
if (!d) {
score->error = tal_strdup(score, "No License: tag in _info");
return;
}
m->license = which_license(d);
if (m->license == LICENSE_UNKNOWN) {
score_file_error(score, m->info_file, d->srcline,
"WARNING: unknown License: in _info: %s",
d->lines[0]);
/* FIXME: For historical reasons, don't fail here. */
score->pass = true;
return;
}
/* If they have a license tag at all, we pass. */
score->pass = true;
expected = expected_link(m, prefix, m->license);
len = readlink(license, buf, sizeof(buf));
if (len < 0) {
/* Could be a real file... OK if not a standard license. */
if (errno == EINVAL) {
if (!expected) {
score->score = score->total;
return;
}
score->error
= tal_fmt(score,
"License in _info is '%s',"
" expect LICENSE symlink '%s'",
d->lines[0], expected);
return;
}
if (errno == ENOENT) {
/* Public domain doesn't really need a file. */
if (m->license == LICENSE_PUBLIC_DOMAIN) {
score->score = score->total;
return;
}
score->error = tal_strdup(score,
"LICENSE does not exist");
if (expected)
license_exists.handle = handle_license_link;
return;
}
err(1, "readlink on %s", license);
}
if (len >= sizeof(buf))
errx(1, "Reading symlink %s gave huge result", license);
buf[len] = '\0';
if (!strstarts(buf, prefix)) {
score->error = tal_fmt(score,
"Expected symlink into %s not %s",
prefix, buf);
return;
}
if (!expected) {
score->error = tal_fmt(score,
"License in _info is unknown '%s',"
" but LICENSE symlink is '%s'",
d->lines[0], buf);
return;
}
if (!streq(buf, expected)) {
score->error = tal_fmt(score,
"Expected symlink to %s not %s",
expected, buf);
return;
}
score->pass = true;
score->score = score->total;
}
struct ccanlint license_exists = {
.key = "license_exists",
.name = "Module has License: entry in _info, and LICENSE symlink/file",
.check = check_has_license,
.needs = "info_exists"
};
REGISTER_TEST(license_exists);
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