trace/beauty/sockaddr.c

0001 // SPDX-License-Identifier: LGPL-2.1
0002 // Copyright (C) 2018, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
0003
0004 #include "trace/beauty/beauty.h"
0005 #include <sys/socket.h>
0006 #include <sys/types.h>
0007 #include <sys/un.h>
0008 #include <arpa/inet.h>
0009
0010 #include "trace/beauty/generated/sockaddr.c"
0011 DEFINE_STRARRAY(socket_families, "PF_");
0012
0013 static size_t af_inet__scnprintf(struct sockaddr *sa, char *bf, size_t size)
0014 {
0015     struct sockaddr_in *sin = (struct sockaddr_in *)sa;
0016     char tmp[16];
0017     return scnprintf(bf, size, ", port: %d, addr: %s", ntohs(sin->sin_port),
0018              inet_ntop(sin->sin_family, &sin->sin_addr, tmp, sizeof(tmp)));
0019 }
0020
0021 static size_t af_inet6__scnprintf(struct sockaddr *sa, char *bf, size_t size)
0022 {
0023     struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
0024     u32 flowinfo = ntohl(sin6->sin6_flowinfo);
0025     char tmp[512];
0026     size_t printed = scnprintf(bf, size, ", port: %d, addr: %s", ntohs(sin6->sin6_port),
0027                    inet_ntop(sin6->sin6_family, &sin6->sin6_addr, tmp, sizeof(tmp)));
0028     if (flowinfo != 0)
0029         printed += scnprintf(bf + printed, size - printed, ", flowinfo: %lu", flowinfo);
0030     if (sin6->sin6_scope_id != 0)
0031         printed += scnprintf(bf + printed, size - printed, ", scope_id: %lu", sin6->sin6_scope_id);
0032
0033     return printed;
0034 }
0035
0036 static size_t af_local__scnprintf(struct sockaddr *sa, char *bf, size_t size)
0037 {
0038     struct sockaddr_un *sun = (struct sockaddr_un *)sa;
0039     return scnprintf(bf, size, ", path: %s", sun->sun_path);
0040 }
0041
0042 static size_t (*af_scnprintfs[])(struct sockaddr *sa, char *bf, size_t size) = {
0043     [AF_LOCAL] = af_local__scnprintf,
0044     [AF_INET]  = af_inet__scnprintf,
0045     [AF_INET6] = af_inet6__scnprintf,
0046 };
0047
0048 static size_t syscall_arg__scnprintf_augmented_sockaddr(struct syscall_arg *arg, char *bf, size_t size)
0049 {
0050     struct sockaddr *sa = (struct sockaddr *)arg->augmented.args;
0051     char family[32];
0052     size_t printed;
0053
0054     strarray__scnprintf(&strarray__socket_families, family, sizeof(family), "%d", arg->show_string_prefix, sa->sa_family);
0055     printed = scnprintf(bf, size, "{ .family: %s", family);
0056
0057     if (sa->sa_family < ARRAY_SIZE(af_scnprintfs) && af_scnprintfs[sa->sa_family])
0058         printed += af_scnprintfs[sa->sa_family](sa, bf + printed, size - printed);
0059
0060     return printed + scnprintf(bf + printed, size - printed, " }");
0061 }
0062
0063 size_t syscall_arg__scnprintf_sockaddr(char *bf, size_t size, struct syscall_arg *arg)
0064 {
0065     if (arg->augmented.args)
0066         return syscall_arg__scnprintf_augmented_sockaddr(arg, bf, size);
0067
0068     return scnprintf(bf, size, "%#lx", arg->val);
0069 }