1 /*
2 Copyright 2021 Northern.tech AS
3
4 This file is part of CFEngine 3 - written and maintained by Northern.tech AS.
5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; version 3.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
18
19 To the extent this program is licensed as part of the Enterprise
20 versions of CFEngine, the applicable Commercial Open Source License
21 (COSL) may apply to this file if you as a licensee so wish it. See
22 included file COSL.txt.
23 */
24
25 /*
26 * A test source file with alternative implementations of some functions. Those
27 * that are affected are generally ifdef'ed out in the original source file by
28 * TEST_CF_EXECD macro.
29 */
30
31 #include <platform.h>
32 #include <cf-execd-runner.h>
33
FeedSmtpDirectives(void * data)34 static void *FeedSmtpDirectives(void *data)
35 {
36 int socket = *(int *)data;
37
38 #define COND_SEND(X) if (send(socket, X, strlen(X), 0) == -1) \
39 { \
40 Log(LOG_LEVEL_ERR, "Failed to write SMTP directive in %s:%i", __FILE__, __LINE__); \
41 return NULL; \
42 } \
43 else \
44 { \
45 fwrite(X, strlen(X), 1, stdout); \
46 }
47
48 #define COND_RECV(X) if ((rcvd = recv(socket, X, sizeof(X), 0)) == -1) \
49 { \
50 Log(LOG_LEVEL_ERR, "Failed to read SMTP response in %s:%i", __FILE__, __LINE__); \
51 return NULL; \
52 } \
53 else \
54 { \
55 fwrite(X, rcvd, 1, stdout); \
56 }
57
58 char recvbuf[CF_BUFSIZE];
59 int rcvd;
60 COND_SEND("220 test.com\r\n");
61 COND_RECV(recvbuf);
62 COND_SEND("250 Hello test.com, pleased to meet you\r\n");
63 COND_RECV(recvbuf);
64 COND_SEND("250 from@test.com... Sender ok\r\n");
65 COND_RECV(recvbuf);
66 COND_SEND("250 to@test.com... Recipient ok\r\n");
67 COND_RECV(recvbuf);
68 COND_SEND("354 Enter mail, end with \".\" on a line by itself\r\n");
69 while (true)
70 {
71 COND_RECV(recvbuf);
72 if ((rcvd == 3 && memcmp(recvbuf + rcvd - 3, ".\r\n", 3) == 0) ||
73 (rcvd > 3 && memcmp(recvbuf + rcvd - 4, "\n.\r\n", 4) == 0))
74 {
75 break;
76 }
77 }
78 COND_SEND("250 Message accepted for delivery\r\n");
79 COND_RECV(recvbuf);
80 COND_SEND("221 test.com closing connection\r\n");
81
82 #undef COND_SEND
83 #undef COND_RECV
84
85 cf_closesocket(socket);
86 free(data);
87
88 return NULL;
89 }
90
ConnectToSmtpSocket(ARG_UNUSED const ExecConfig * config)91 int ConnectToSmtpSocket(ARG_UNUSED const ExecConfig *config)
92 {
93 int sockets[2];
94 if (socketpair(AF_UNIX, SOCK_STREAM, 0, sockets) < 0)
95 {
96 return -1;
97 }
98
99 int *thread_socket = xmalloc(sizeof(int));
100 *thread_socket = sockets[1];
101
102 pthread_attr_t attr;
103 pthread_attr_init(&attr);
104 pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
105 pthread_t thread;
106 int ret = pthread_create(&thread, &attr, &FeedSmtpDirectives, thread_socket);
107 pthread_attr_destroy(&attr);
108
109 if (ret != 0)
110 {
111 free(thread_socket);
112 cf_closesocket(sockets[0]);
113 cf_closesocket(sockets[1]);
114 return -1;
115 }
116
117 return sockets[0];
118 }
119