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core: use extract_first_word() instead of sscanf()

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This commit is contained in:
Frantisek Sumsal 2023-05-04 16:25:25 +02:00
parent 6ad7989ea0
commit 77be02ad3c
1 changed files with 150 additions and 90 deletions
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240
src/core/socket.c
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@ -2597,6 +2597,7 @@ static int socket_serialize(Unit *u, FILE *f, FDSet *fds) {
static int socket_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
Socket *s = SOCKET(u);
int r;
assert(u);
assert(key);
@ -2651,124 +2652,183 @@ static int socket_deserialize_item(Unit *u, const char *key, const char *value,
s->control_command = s->exec_command[id];
}
} else if (streq(key, "fifo")) {
int fd, skip = 0;
_cleanup_free_ char *fdv = NULL;
bool found = false;
int fd;
if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
r = extract_first_word(&value, &fdv, NULL, 0);
if (r <= 0) {
log_unit_debug(u, "Failed to parse fifo value: %s", value);
else {
bool found = false;
LIST_FOREACH(port, p, s->ports)
if (p->fd < 0 &&
p->type == SOCKET_FIFO &&
path_equal_or_files_same(p->path, value+skip, 0)) {
p->fd = fdset_remove(fds, fd);
found = true;
break;
}
if (!found)
log_unit_debug(u, "No matching fifo socket found: %s", value+skip);
return 0;
}
fd = parse_fd(fdv);
if (fd < 0 || !fdset_contains(fds, fd)) {
log_unit_debug(u, "Invalid fifo value: %s", fdv);
return 0;
}
LIST_FOREACH(port, p, s->ports)
if (p->fd < 0 &&
p->type == SOCKET_FIFO &&
path_equal_or_files_same(p->path, value, 0)) {
p->fd = fdset_remove(fds, fd);
found = true;
break;
}
if (!found)
log_unit_debug(u, "No matching fifo socket found: %s", value);
} else if (streq(key, "special")) {
int fd, skip = 0;
_cleanup_free_ char *fdv = NULL;
bool found = false;
int fd;
if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
r = extract_first_word(&value, &fdv, NULL, 0);
if (r <= 0) {
log_unit_debug(u, "Failed to parse special value: %s", value);
else {
bool found = false;
LIST_FOREACH(port, p, s->ports)
if (p->fd < 0 &&
p->type == SOCKET_SPECIAL &&
path_equal_or_files_same(p->path, value+skip, 0)) {
p->fd = fdset_remove(fds, fd);
found = true;
break;
}
if (!found)
log_unit_debug(u, "No matching special socket found: %s", value+skip);
return 0;
}
fd = parse_fd(fdv);
if (fd < 0 || !fdset_contains(fds, fd)) {
log_unit_debug(u, "Invalid special value: %s", fdv);
return 0;
}
LIST_FOREACH(port, p, s->ports)
if (p->fd < 0 &&
p->type == SOCKET_SPECIAL &&
path_equal_or_files_same(p->path, value, 0)) {
p->fd = fdset_remove(fds, fd);
found = true;
break;
}
if (!found)
log_unit_debug(u, "No matching special socket found: %s", value);
} else if (streq(key, "mqueue")) {
int fd, skip = 0;
_cleanup_free_ char *fdv = NULL;
bool found = false;
int fd;
if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
r = extract_first_word(&value, &fdv, NULL, 0);
if (r <= 0) {
log_unit_debug(u, "Failed to parse mqueue value: %s", value);
else {
bool found = false;
LIST_FOREACH(port, p, s->ports)
if (p->fd < 0 &&
p->type == SOCKET_MQUEUE &&
streq(p->path, value+skip)) {
p->fd = fdset_remove(fds, fd);
found = true;
break;
}
if (!found)
log_unit_debug(u, "No matching mqueue socket found: %s", value+skip);
return 0;
}
fd = parse_fd(fdv);
if (fd < 0 || !fdset_contains(fds, fd)) {
log_unit_debug(u, "Invalid mqueue value: %s", fdv);
return 0;
}
LIST_FOREACH(port, p, s->ports)
if (p->fd < 0 &&
p->type == SOCKET_MQUEUE &&
streq(p->path, value)) {
p->fd = fdset_remove(fds, fd);
found = true;
break;
}
if (!found)
log_unit_debug(u, "No matching mqueue socket found: %s", value);
} else if (streq(key, "socket")) {
int fd, type, skip = 0;
_cleanup_free_ char *fdv = NULL, *typev = NULL;
bool found = false;
int fd, type;
if (sscanf(value, "%i %i %n", &fd, &type, &skip) < 2 || fd < 0 || type < 0 || !fdset_contains(fds, fd))
log_unit_debug(u, "Failed to parse socket value: %s", value);
else {
bool found = false;
LIST_FOREACH(port, p, s->ports)
if (p->fd < 0 &&
socket_address_is(&p->address, value+skip, type)) {
p->fd = fdset_remove(fds, fd);
found = true;
break;
}
if (!found)
log_unit_debug(u, "No matching %s socket found: %s",
socket_address_type_to_string(type), value+skip);
r = extract_first_word(&value, &fdv, NULL, 0);
if (r <= 0) {
log_unit_debug(u, "Failed to parse socket fd from value: %s", value);
return 0;
}
fd = parse_fd(fdv);
if (fd < 0 || !fdset_contains(fds, fd)) {
log_unit_debug(u, "Invalid socket fd: %s", fdv);
return 0;
}
r = extract_first_word(&value, &typev, NULL, 0);
if (r <= 0) {
log_unit_debug(u, "Failed to parse socket type from value: %s", value);
return 0;
}
if (safe_atoi(typev, &type) < 0 || type < 0) {
log_unit_debug(u, "Invalid socket type: %s", typev);
return 0;
}
LIST_FOREACH(port, p, s->ports)
if (p->fd < 0 &&
socket_address_is(&p->address, value, type)) {
p->fd = fdset_remove(fds, fd);
found = true;
break;
}
if (!found)
log_unit_debug(u, "No matching %s socket found: %s",
socket_address_type_to_string(type), value);
} else if (streq(key, "netlink")) {
int fd, skip = 0;
_cleanup_free_ char *fdv = NULL;
bool found = false;
int fd;
if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
r = extract_first_word(&value, &fdv, NULL, 0);
if (r <= 0) {
log_unit_debug(u, "Failed to parse socket value: %s", value);
else {
bool found = false;
LIST_FOREACH(port, p, s->ports)
if (p->fd < 0 &&
socket_address_is_netlink(&p->address, value+skip)) {
p->fd = fdset_remove(fds, fd);
found = true;
break;
}
if (!found)
log_unit_debug(u, "No matching netlink socket found: %s", value+skip);
return 0;
}
fd = parse_fd(fdv);
if (fd < 0 || !fdset_contains(fds, fd)) {
log_unit_debug(u, "Invalid socket value: %s", fdv);
return 0;
}
LIST_FOREACH(port, p, s->ports)
if (p->fd < 0 &&
socket_address_is_netlink(&p->address, value)) {
p->fd = fdset_remove(fds, fd);
found = true;
break;
}
if (!found)
log_unit_debug(u, "No matching netlink socket found: %s", value);
} else if (streq(key, "ffs")) {
int fd, skip = 0;
_cleanup_free_ char *fdv = NULL;
bool found = false;
int fd;
if (sscanf(value, "%i %n", &fd, &skip) < 1 || fd < 0 || !fdset_contains(fds, fd))
r = extract_first_word(&value, &fdv, NULL, 0);
if (r <= 0) {
log_unit_debug(u, "Failed to parse ffs value: %s", value);
else {
bool found = false;
LIST_FOREACH(port, p, s->ports)
if (p->fd < 0 &&
p->type == SOCKET_USB_FUNCTION &&
path_equal_or_files_same(p->path, value+skip, 0)) {
p->fd = fdset_remove(fds, fd);
found = true;
break;
}
if (!found)
log_unit_debug(u, "No matching ffs socket found: %s", value+skip);
return 0;
}
fd = parse_fd(fdv);
if (fd < 0 || !fdset_contains(fds, fd)) {
log_unit_debug(u, "Invalid ffs value: %s", fdv);
return 0;
}
LIST_FOREACH(port, p, s->ports)
if (p->fd < 0 &&
p->type == SOCKET_USB_FUNCTION &&
path_equal_or_files_same(p->path, value, 0)) {
p->fd = fdset_remove(fds, fd);
found = true;
break;
}
if (!found)
log_unit_debug(u, "No matching ffs socket found: %s", value);
} else
log_unit_debug(UNIT(s), "Unknown serialization key: %s", key);