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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/shared/ip-protocol-list.c | |
parent | Initial commit. (diff) | |
download | systemd-upstream.tar.xz systemd-upstream.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/shared/ip-protocol-list.c | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/src/shared/ip-protocol-list.c b/src/shared/ip-protocol-list.c new file mode 100644 index 0000000..21d88f2 --- /dev/null +++ b/src/shared/ip-protocol-list.c @@ -0,0 +1,77 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include <errno.h> +#include <netinet/in.h> + +#include "alloc-util.h" +#include "ip-protocol-list.h" +#include "macro.h" +#include "parse-util.h" +#include "string-util.h" + +static const struct ip_protocol_name* lookup_ip_protocol(register const char *str, register GPERF_LEN_TYPE len); + +#include "ip-protocol-from-name.h" +#include "ip-protocol-to-name.h" + +const char *ip_protocol_to_name(int id) { + + if (id < 0) + return NULL; + + if ((size_t) id >= ELEMENTSOF(ip_protocol_names)) + return NULL; + + return ip_protocol_names[id]; +} + +int ip_protocol_from_name(const char *name) { + const struct ip_protocol_name *sc; + + assert(name); + + sc = lookup_ip_protocol(name, strlen(name)); + if (!sc) + return -EINVAL; + + return sc->id; +} + +int parse_ip_protocol(const char *s) { + _cleanup_free_ char *str = NULL; + int i, r; + + assert(s); + + if (isempty(s)) + return IPPROTO_IP; + + /* Do not use strdupa() here, as the input string may come from * + * command line or config files. */ + str = strdup(s); + if (!str) + return -ENOMEM; + + i = ip_protocol_from_name(ascii_strlower(str)); + if (i >= 0) + return i; + + r = safe_atoi(str, &i); + if (r < 0) + return r; + + if (!ip_protocol_to_name(i)) + return -EINVAL; + + return i; +} + +const char *ip_protocol_to_tcp_udp(int id) { + return IN_SET(id, IPPROTO_TCP, IPPROTO_UDP) ? + ip_protocol_to_name(id) : NULL; +} + +int ip_protocol_from_tcp_udp(const char *ip_protocol) { + int id = ip_protocol_from_name(ip_protocol); + return IN_SET(id, IPPROTO_TCP, IPPROTO_UDP) ? id : -EINVAL; +} |