TapTap
23b1d6660c
CI / lint (push) Failing after 16s
CI / build-and-test (push) Has been skipped
CI / sanitizers (address) (push) Has been skipped
CI / sanitizers (thread) (push) Has been skipped
CI / lint (pull_request) Failing after 44s
CI / build-and-test (pull_request) Has been skipped
CI / sanitizers (address) (pull_request) Has been skipped
CI / sanitizers (thread) (pull_request) Has been skipped
- Reformat all C/H files to match .clang-format (LLVM style) - Fix 26 cppcheck const-correctness warnings (constParameterPointer, constVariablePointer, constVariable) - Update function declarations in headers to match const parameters
109 lines
3.0 KiB
C
109 lines
3.0 KiB
C
#include "metadata.h"
|
|
#include "file.h"
|
|
#include "protocol.h"
|
|
#include <fcntl.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/stat.h>
|
|
#include <time.h>
|
|
#include <unistd.h>
|
|
|
|
void metadata_to_buf(char** buf, const FileMetadata* m) {
|
|
int present = (m != NULL) ? 1 : 0;
|
|
memcpy(*buf, &present, sizeof(int));
|
|
*buf += sizeof(int);
|
|
if (m == NULL)
|
|
return;
|
|
memcpy(*buf, &m->mode, sizeof(mode_t));
|
|
*buf += sizeof(mode_t);
|
|
memcpy(*buf, &m->uid, sizeof(uid_t));
|
|
*buf += sizeof(uid_t);
|
|
memcpy(*buf, &m->gid, sizeof(gid_t));
|
|
*buf += sizeof(gid_t);
|
|
memcpy(*buf, &m->mtime_sec, sizeof(time_t));
|
|
*buf += sizeof(time_t);
|
|
memcpy(*buf, &m->mtime_nsec, sizeof(long));
|
|
*buf += sizeof(long);
|
|
}
|
|
|
|
FileMetadata* metadata_from_buf(char** buf) {
|
|
int present;
|
|
memcpy(&present, *buf, sizeof(int));
|
|
*buf += sizeof(int);
|
|
if (!present)
|
|
return NULL;
|
|
FileMetadata* m = malloc(sizeof(FileMetadata));
|
|
memcpy(&m->mode, *buf, sizeof(mode_t));
|
|
*buf += sizeof(mode_t);
|
|
memcpy(&m->uid, *buf, sizeof(uid_t));
|
|
*buf += sizeof(uid_t);
|
|
memcpy(&m->gid, *buf, sizeof(gid_t));
|
|
*buf += sizeof(gid_t);
|
|
memcpy(&m->mtime_sec, *buf, sizeof(time_t));
|
|
*buf += sizeof(time_t);
|
|
memcpy(&m->mtime_nsec, *buf, sizeof(long));
|
|
*buf += sizeof(long);
|
|
return m;
|
|
}
|
|
|
|
bool metadata_send(int file_descriptor, FileMetadata* m) {
|
|
if (m == NULL) {
|
|
int zero = 0;
|
|
return send_n_data(file_descriptor, &zero, sizeof(int));
|
|
}
|
|
int present = 1;
|
|
return send_n_data(file_descriptor, &present, sizeof(int)) &&
|
|
send_n_data(file_descriptor, &m->mode, sizeof(mode_t)) &&
|
|
send_n_data(file_descriptor, &m->uid, sizeof(uid_t)) &&
|
|
send_n_data(file_descriptor, &m->gid, sizeof(gid_t)) &&
|
|
send_n_data(file_descriptor, &m->mtime_sec, sizeof(time_t)) &&
|
|
send_n_data(file_descriptor, &m->mtime_nsec, sizeof(long));
|
|
}
|
|
|
|
FileMetadata* metadata_receive(int file_descriptor, int* ok) {
|
|
int present;
|
|
if (!receive_n_data(file_descriptor, &present, sizeof(int))) {
|
|
if (ok)
|
|
*ok = 0;
|
|
return NULL;
|
|
}
|
|
if (!present) {
|
|
if (ok)
|
|
*ok = 1;
|
|
return NULL;
|
|
}
|
|
FileMetadata* m = malloc(sizeof(FileMetadata));
|
|
if (m == NULL) {
|
|
if (ok)
|
|
*ok = 0;
|
|
return NULL;
|
|
}
|
|
if (!receive_n_data(file_descriptor, &m->mode, sizeof(mode_t)) ||
|
|
!receive_n_data(file_descriptor, &m->uid, sizeof(uid_t)) ||
|
|
!receive_n_data(file_descriptor, &m->gid, sizeof(gid_t)) ||
|
|
!receive_n_data(file_descriptor, &m->mtime_sec, sizeof(time_t)) ||
|
|
!receive_n_data(file_descriptor, &m->mtime_nsec, sizeof(long))) {
|
|
free(m);
|
|
if (ok)
|
|
*ok = 0;
|
|
return NULL;
|
|
}
|
|
if (ok)
|
|
*ok = 1;
|
|
return m;
|
|
}
|
|
|
|
void file_restore_metadata(const char* path, FileMetadata* metadata) {
|
|
if (metadata == NULL)
|
|
return;
|
|
chmod(path, metadata->mode & 07777);
|
|
int chown_ret = chown(path, metadata->uid, metadata->gid);
|
|
(void)chown_ret;
|
|
struct timespec times[2];
|
|
times[0].tv_sec = 0;
|
|
times[0].tv_nsec = UTIME_OMIT;
|
|
times[1].tv_sec = metadata->mtime_sec;
|
|
times[1].tv_nsec = metadata->mtime_nsec;
|
|
utimensat(AT_FDCWD, path, times, 0);
|
|
}
|