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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "alloc-util.h"
#include "glyph-util.h"
#include "in-addr-util.h"
#include "iovec-util.h"
#include "json-util.h"
#include "path-util.h"
#include "string-util.h"
#include "user-util.h"
int json_dispatch_unbase64_iovec(const char *name, sd_json_variant *variant, sd_json_dispatch_flags_t flags, void *userdata) {
_cleanup_free_ void *buffer = NULL;
struct iovec *iov = ASSERT_PTR(userdata);
size_t sz;
int r;
if (!sd_json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
r = sd_json_variant_unbase64(variant, &buffer, &sz);
if (r < 0)
return json_log(variant, flags, r, "JSON field '%s' is not valid Base64 data.", strna(name));
free_and_replace(iov->iov_base, buffer);
iov->iov_len = sz;
return 0;
}
int json_dispatch_byte_array_iovec(const char *name, sd_json_variant *variant, sd_json_dispatch_flags_t flags, void *userdata) {
_cleanup_free_ uint8_t *buffer = NULL;
struct iovec *iov = ASSERT_PTR(userdata);
size_t sz, k = 0;
assert(variant);
if (!sd_json_variant_is_array(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an array.", strna(name));
sz = sd_json_variant_elements(variant);
buffer = new(uint8_t, sz + 1);
if (!buffer)
return json_log(variant, flags, SYNTHETIC_ERRNO(ENOMEM), "Out of memory.");
sd_json_variant *i;
JSON_VARIANT_ARRAY_FOREACH(i, variant) {
uint64_t b;
if (!sd_json_variant_is_unsigned(i))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "Element %zu of JSON field '%s' is not an unsigned integer.", k, strna(name));
b = sd_json_variant_unsigned(i);
if (b > 0xff)
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL),
"Element %zu of JSON field '%s' is out of range 0%s255.",
k, strna(name), special_glyph(SPECIAL_GLYPH_ELLIPSIS));
buffer[k++] = (uint8_t) b;
}
assert(k == sz);
/* Append a NUL byte for safety, like we do in memdup_suffix0() and others. */
buffer[sz] = 0;
free_and_replace(iov->iov_base, buffer);
iov->iov_len = sz;
return 0;
}
int json_dispatch_user_group_name(const char *name, sd_json_variant *variant, sd_json_dispatch_flags_t flags, void *userdata) {
char **s = userdata;
const char *n;
int r;
if (sd_json_variant_is_null(variant)) {
*s = mfree(*s);
return 0;
}
if (!sd_json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
n = sd_json_variant_string(variant);
if (!valid_user_group_name(n, FLAGS_SET(flags, SD_JSON_RELAX) ? VALID_USER_RELAX : 0))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a valid user/group name.", strna(name));
r = free_and_strdup(s, n);
if (r < 0)
return json_log(variant, flags, r, "Failed to allocate string: %m");
return 0;
}
int json_dispatch_in_addr(const char *name, sd_json_variant *variant, sd_json_dispatch_flags_t flags, void *userdata) {
struct in_addr *address = ASSERT_PTR(userdata);
_cleanup_(iovec_done) struct iovec iov = {};
int r;
r = json_dispatch_byte_array_iovec(name, variant, flags, &iov);
if (r < 0)
return r;
if (iov.iov_len != sizeof(struct in_addr))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is array of unexpected size.", strna(name));
memcpy(address, iov.iov_base, iov.iov_len);
return 0;
}
int json_dispatch_path(const char *name, sd_json_variant *variant, sd_json_dispatch_flags_t flags, void *userdata) {
char **p = ASSERT_PTR(userdata);
const char *path;
assert(variant);
if (sd_json_variant_is_null(variant)) {
*p = mfree(*p);
return 0;
}
if (!sd_json_variant_is_string(variant))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a string.", strna(name));
path = sd_json_variant_string(variant);
if (!((flags & SD_JSON_STRICT) ? path_is_normalized(path) : path_is_valid(path)))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not a normalized file system path.", strna(name));
if (!path_is_absolute(path))
return json_log(variant, flags, SYNTHETIC_ERRNO(EINVAL), "JSON field '%s' is not an absolute file system path.", strna(name));
if (free_and_strdup(p, path) < 0)
return json_log_oom(variant, flags);
return 0;
}
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