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7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | /* | |
4 | * Ceph - scalable distributed file system | |
5 | * | |
6 | * Copyright (C) 2011 New Dream Network | |
7 | * | |
8 | * This is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU Lesser General Public | |
10 | * License version 2.1, as published by the Free Software | |
11 | * Foundation. See file COPYING. | |
12 | * | |
13 | */ | |
14 | ||
91327a77 AA |
15 | #include <arpa/inet.h> |
16 | #include <fcntl.h> | |
17 | #include <sys/socket.h> | |
18 | #include <sys/un.h> | |
f67539c2 | 19 | #include <unistd.h> |
91327a77 | 20 | |
7c673cae | 21 | #include "common/admin_socket.h" |
7c673cae FG |
22 | #include "common/errno.h" |
23 | #include "common/safe_io.h" | |
24 | #include "common/admin_socket_client.h" | |
25 | ||
91327a77 AA |
26 | #include "include/compat.h" |
27 | #include "include/sock_compat.h" | |
7c673cae FG |
28 | |
29 | using std::ostringstream; | |
30 | ||
31 | const char* get_rand_socket_path() | |
32 | { | |
33 | static char *g_socket_path = NULL; | |
34 | ||
35 | if (g_socket_path == NULL) { | |
36 | char buf[512]; | |
37 | const char *tdir = getenv("TMPDIR"); | |
f67539c2 TL |
38 | #ifdef _WIN32 |
39 | if (tdir == NULL) { | |
40 | tdir = getenv("TEMP"); | |
41 | } | |
42 | #endif /* _WIN32 */ | |
7c673cae FG |
43 | if (tdir == NULL) { |
44 | tdir = "/tmp"; | |
45 | } | |
46 | snprintf(buf, sizeof(((struct sockaddr_un*)0)->sun_path), | |
47 | "%s/perfcounters_test_socket.%ld.%ld", | |
48 | tdir, (long int)getpid(), time(NULL)); | |
49 | g_socket_path = (char*)strdup(buf); | |
50 | } | |
51 | return g_socket_path; | |
52 | } | |
53 | ||
54 | static std::string asok_connect(const std::string &path, int *fd) | |
55 | { | |
91327a77 | 56 | int socket_fd = socket_cloexec(PF_UNIX, SOCK_STREAM, 0); |
7c673cae | 57 | if(socket_fd < 0) { |
f67539c2 | 58 | int err = ceph_sock_errno(); |
7c673cae FG |
59 | ostringstream oss; |
60 | oss << "socket(PF_UNIX, SOCK_STREAM, 0) failed: " << cpp_strerror(err); | |
61 | return oss.str(); | |
62 | } | |
63 | ||
64 | struct sockaddr_un address; | |
92f5a8d4 | 65 | // FIPS zeroization audit 20191115: this memset is fine. |
7c673cae FG |
66 | memset(&address, 0, sizeof(struct sockaddr_un)); |
67 | address.sun_family = AF_UNIX; | |
68 | snprintf(address.sun_path, sizeof(address.sun_path), "%s", path.c_str()); | |
69 | ||
70 | if (::connect(socket_fd, (struct sockaddr *) &address, | |
71 | sizeof(struct sockaddr_un)) != 0) { | |
f67539c2 | 72 | int err = ceph_sock_errno(); |
7c673cae FG |
73 | ostringstream oss; |
74 | oss << "connect(" << socket_fd << ") failed: " << cpp_strerror(err); | |
f67539c2 | 75 | compat_closesocket(socket_fd); |
7c673cae FG |
76 | return oss.str(); |
77 | } | |
78 | ||
79 | struct timeval timer; | |
92f5a8d4 | 80 | timer.tv_sec = 10; |
7c673cae | 81 | timer.tv_usec = 0; |
f67539c2 TL |
82 | if (::setsockopt(socket_fd, SOL_SOCKET, SO_RCVTIMEO, (SOCKOPT_VAL_TYPE)&timer, sizeof(timer))) { |
83 | int err = ceph_sock_errno(); | |
7c673cae FG |
84 | ostringstream oss; |
85 | oss << "setsockopt(" << socket_fd << ", SO_RCVTIMEO) failed: " | |
86 | << cpp_strerror(err); | |
f67539c2 | 87 | compat_closesocket(socket_fd); |
7c673cae FG |
88 | return oss.str(); |
89 | } | |
92f5a8d4 | 90 | timer.tv_sec = 10; |
7c673cae | 91 | timer.tv_usec = 0; |
f67539c2 TL |
92 | if (::setsockopt(socket_fd, SOL_SOCKET, SO_SNDTIMEO, (SOCKOPT_VAL_TYPE)&timer, sizeof(timer))) { |
93 | int err = ceph_sock_errno(); | |
7c673cae FG |
94 | ostringstream oss; |
95 | oss << "setsockopt(" << socket_fd << ", SO_SNDTIMEO) failed: " | |
96 | << cpp_strerror(err); | |
f67539c2 | 97 | compat_closesocket(socket_fd); |
7c673cae FG |
98 | return oss.str(); |
99 | } | |
100 | ||
101 | *fd = socket_fd; | |
102 | return ""; | |
103 | } | |
104 | ||
105 | static std::string asok_request(int socket_fd, std::string request) | |
106 | { | |
f67539c2 | 107 | ssize_t res = safe_send(socket_fd, request.c_str(), request.length() + 1); |
7c673cae FG |
108 | if (res < 0) { |
109 | int err = res; | |
110 | ostringstream oss; | |
111 | oss << "safe_write(" << socket_fd << ") failed to write request code: " | |
112 | << cpp_strerror(err); | |
113 | return oss.str(); | |
114 | } | |
115 | return ""; | |
116 | } | |
117 | ||
118 | AdminSocketClient:: | |
119 | AdminSocketClient(const std::string &path) | |
120 | : m_path(path) | |
121 | { | |
122 | } | |
123 | ||
124 | std::string AdminSocketClient::ping(bool *ok) | |
125 | { | |
126 | std::string version; | |
127 | std::string result = do_request("{\"prefix\":\"0\"}", &version); | |
128 | *ok = result == "" && version.length() == 1; | |
129 | return result; | |
130 | } | |
131 | ||
132 | std::string AdminSocketClient::do_request(std::string request, std::string *result) | |
133 | { | |
134 | int socket_fd = 0, res; | |
135 | std::string buffer; | |
136 | uint32_t message_size_raw, message_size; | |
137 | ||
138 | std::string err = asok_connect(m_path, &socket_fd); | |
139 | if (!err.empty()) { | |
140 | goto out; | |
141 | } | |
142 | err = asok_request(socket_fd, request); | |
143 | if (!err.empty()) { | |
144 | goto done; | |
145 | } | |
f67539c2 | 146 | res = safe_recv_exact(socket_fd, &message_size_raw, |
7c673cae FG |
147 | sizeof(message_size_raw)); |
148 | if (res < 0) { | |
149 | int e = res; | |
150 | ostringstream oss; | |
f67539c2 | 151 | oss << "safe_recv(" << socket_fd << ") failed to read message size: " |
7c673cae FG |
152 | << cpp_strerror(e); |
153 | err = oss.str(); | |
154 | goto done; | |
155 | } | |
156 | message_size = ntohl(message_size_raw); | |
157 | buffer.resize(message_size, 0); | |
f67539c2 | 158 | res = safe_recv_exact(socket_fd, &buffer[0], message_size); |
7c673cae FG |
159 | if (res < 0) { |
160 | int e = res; | |
161 | ostringstream oss; | |
f67539c2 | 162 | oss << "safe_recv(" << socket_fd << ") failed: " << cpp_strerror(e); |
7c673cae FG |
163 | err = oss.str(); |
164 | goto done; | |
165 | } | |
166 | //printf("MESSAGE FROM SERVER: %s\n", buffer.c_str()); | |
167 | std::swap(*result, buffer); | |
168 | done: | |
f67539c2 | 169 | compat_closesocket(socket_fd); |
7c673cae FG |
170 | out: |
171 | return err; | |
172 | } |