GCOV - Varnish Cache


/*-
 * Copyright (c) 2006 Verdens Gang AS
 * Copyright (c) 2006-2015 Varnish Software AS
 * All rights reserved.
 *
 * Author: Cecilie Fritzvold <cecilihf@linpro.no>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "config.h"

#include <sys/types.h>
#include <sys/socket.h>

#include <stdio.h>

#if defined(HAVE_EDIT_READLINE_READLINE_H)
#  include <edit/readline/readline.h>
#elif defined(HAVE_LIBEDIT)
#  include <editline/readline.h>
#elif defined (HAVE_READLINE_READLINE_H)
#  include <readline/readline.h>
#  ifdef HAVE_READLINE_HISTORY_H
#    include <readline/history.h>
#  else
#    error missing history.h - this should have got caught in configure
#  endif
#else
#  error missing readline.h - this should have got caught in configure
#endif

#include <math.h>
#include <fcntl.h>
#include <poll.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "vdef.h"

#include "vqueue.h"

#include "vapi/vsig.h"
#include "vapi/vsm.h"
#include "vas.h"
#include "vcli.h"
#include "vjsn.h"
#include "vtcp.h"

#define RL_EXIT(status) \
        do { \
                rl_callback_handler_remove(); \
                exit(status); \
        } while (0)

enum pass_mode_e {
        pass_script,
        pass_interactive,
};

static double timeout = 5;
static int p_arg = 0;
static int line_sock;

static void
cli_write(int sock, const char *s)
{
        int i, l;

        i = strlen(s);
        l = write (sock, s, i);
        if (i == l)
                return;
        perror("Write error CLI socket");
        RL_EXIT(1);
}

/*
 * This function establishes a connection to the specified ip and port and
 * sends a command to varnishd. If varnishd returns an OK status, the result
 * is printed and 0 returned. Else, an error message is printed and 1 is
 * returned
 */
static int
cli_sock(const char *T_arg, const char *S_arg)
{
        int fd;
        int sock;
        unsigned status;
        char *answer = NULL;
        char buf[CLI_AUTH_RESPONSE_LEN + 1];
        const char *err;

        sock = VTCP_open(T_arg, NULL, timeout, &err);
        if (sock < 0) {
                fprintf(stderr, "Connection failed (%s): %s\n", T_arg, err);
                return (-1);
        }

        (void)VCLI_ReadResult(sock, &status, &answer, timeout);
        if (status == CLIS_AUTH) {
                if (S_arg == NULL) {
                        fprintf(stderr, "Authentication required\n");
                        free(answer);
                        closefd(&sock);
                        return (-1);
                }
                fd = open(S_arg, O_RDONLY);
                if (fd < 0) {
                        fprintf(stderr, "Cannot open \"%s\": %s\n",
                            S_arg, strerror(errno));
                        closefd(&sock);
                        free(answer);
                        return (-1);
                }
                VCLI_AuthResponse(fd, answer, buf);
                closefd(&fd);
                free(answer);

                cli_write(sock, "auth ");
                cli_write(sock, buf);
                cli_write(sock, "\n");
                (void)VCLI_ReadResult(sock, &status, &answer, timeout);
        }
        if (status != CLIS_OK && status != CLIS_TRUNCATED) {
                fprintf(stderr, "Rejected %u\n%s\n", status, answer);
                closefd(&sock);
                free(answer);
                return (-1);
        }
        free(answer);

        cli_write(sock, "ping\n");
        (void)VCLI_ReadResult(sock, &status, &answer, timeout);
        if (status != CLIS_OK || strstr(answer, "PONG") == NULL) {
                fprintf(stderr, "No pong received from server\n");
                closefd(&sock);
                free(answer);
                return (-1);
        }
        free(answer);

        return (sock);
}

static unsigned
pass_answer(int fd, enum pass_mode_e mode)
{
        unsigned u, status;
        char *answer = NULL;

        u = VCLI_ReadResult(fd, &status, &answer, timeout);
        if (u) {
                if (status == CLIS_COMMS) {
                        fprintf(stderr, "%s\n", answer);
                        RL_EXIT(2);
                }
                if (answer)
                        fprintf(stderr, "%s\n", answer);
                RL_EXIT(1);
        }

        if (p_arg && answer != NULL) {
                printf("%-3u %-8zu\n%s", status, strlen(answer), answer);
        } else if (p_arg) {
                printf("%-3u %-8u\n", status, 0U);
        } else {
                if (mode == pass_interactive)
                        printf("%u\n", status);
                if (answer != NULL)
                        printf("%s\n", answer);
                if (status == CLIS_TRUNCATED)
                        printf("[response was truncated]\n");
        }
        free(answer);
        (void)fflush(stdout);
        return (status);
}

static void v_noreturn_
do_args(int sock, int argc, char * const *argv)
{
        int i;
        unsigned status;

        for (i = 0; i < argc; i++) {
                /* XXX: We should really CLI-quote these */
                if (i > 0)
                        cli_write(sock, " ");
                cli_write(sock, argv[i]);
        }
        cli_write(sock, "\n");
        status = pass_answer(sock, pass_script);
        closefd(&sock);
        if (status == CLIS_OK || status == CLIS_TRUNCATED)
                exit(0);
        if (!p_arg)
                fprintf(stderr, "Command failed with error code %u\n", status);
        exit(1);
}

/* Callback for readline, doesn't take a private pointer, so we need
 * to have a global variable.
 */
static void v_matchproto_()
send_line(char *l)
{
        if (l) {
                cli_write(line_sock, l);
                cli_write(line_sock, "\n");
                if (*l)
                        add_history(l);
                rl_callback_handler_install("varnish> ", send_line);
        } else {
                RL_EXIT(0);
        }
}

static char *
command_generator (const char *text, int state)
{
        static struct vjsn *jsn_cmds;
        static const struct vjsn_val *jv;
        struct vjsn_val *jv2;
        unsigned u;
        char *answer = NULL;
        const char *err;

        if (!state) {
                cli_write(line_sock, "help -j\n");
                u = VCLI_ReadResult(line_sock, NULL, &answer, timeout);
                if (u) {
                        free(answer);
                        return (NULL);
                }
                jsn_cmds = vjsn_parse(answer, &err);
                free(answer);
                if (err != NULL)
                        return (NULL);
                AN(jsn_cmds);
                AN(jsn_cmds->value);
                assert (vjsn_is_array(jsn_cmds->value));
                jv = VTAILQ_FIRST(&jsn_cmds->value->children);
                assert (vjsn_is_number(jv));
                jv = VTAILQ_NEXT(jv, list);
                assert (vjsn_is_array(jv));
                jv = VTAILQ_NEXT(jv, list);
                assert (vjsn_is_number(jv));
                jv = VTAILQ_NEXT(jv, list);
        }
        while (jv != NULL) {
                assert (vjsn_is_object(jv));
                jv2 = VTAILQ_FIRST(&jv->children);
                AN(jv2);
                jv = VTAILQ_NEXT(jv, list);
                assert (vjsn_is_string(jv2));
                assert (!strcmp(jv2->name, "request"));
                if (!strncmp(text, jv2->value, strlen(text)))
                        return (strdup(jv2->value));
        }
        vjsn_delete(&jsn_cmds);
        return (NULL);
}

static char **
varnishadm_completion (const char *text, int start, int end)
{
        char **matches;
        (void)end;
        matches = (char **)NULL;
        if (start == 0)
                matches = rl_completion_matches(text, command_generator);
        return (matches);
}


/*
 * No arguments given, simply pass bytes on stdin/stdout and CLI socket
 * Send a "banner" to varnish, to provoke a welcome message.
 */
static void v_noreturn_
interactive(int sock)
{
        struct pollfd fds[2];
        int i;
        unsigned status;
        line_sock = sock;
        rl_already_prompted = 1;
        rl_callback_handler_install("varnish> ", send_line);
        rl_attempted_completion_function = varnishadm_completion;

        fds[0].fd = sock;
        fds[0].events = POLLIN;
        fds[1].fd = 0;
        fds[1].events = POLLIN;

        cli_write(sock, "banner\n");
        while (1) {
                i = poll(fds, 2, -1);
                if (i == -1 && errno == EINTR) {
                        continue;
                }
                assert(i > 0);
                if (fds[0].revents & POLLIN) {
                        /* Get rid of the prompt, kinda hackish */
                        printf("\r           \r");
                        status = pass_answer(fds[0].fd, pass_interactive);
                        rl_forced_update_display();
                        if (status == CLIS_CLOSE)
                                RL_EXIT(0);
                }
                if (fds[1].revents & POLLIN) {
                        rl_callback_read_char();
                }
        }
}

/*
 * No arguments given, simply pass bytes on stdin/stdout and CLI socket
 */
static void v_noreturn_
pass(int sock)
{
        struct pollfd fds[2];
        char buf[1024];
        int i;
        ssize_t n;
        int busy = 0;

        fds[0].fd = sock;
        fds[0].events = POLLIN;
        fds[1].fd = 0;
        fds[1].events = POLLIN;
        while (1) {
                i = poll(fds, 2, -1);
                if (i == -1 && errno == EINTR) {
                        continue;
                }
                assert(i > 0);
                if (fds[0].revents & POLLIN) {
                        (void)pass_answer(fds[0].fd, pass_script);
                        busy = 0;
                        if (fds[1].fd < 0)
                                RL_EXIT(0);
                }
                if (fds[1].revents & POLLIN || fds[1].revents & POLLHUP) {
                        n = read(fds[1].fd, buf, sizeof buf - 1);
                        if (n == 0) {
                                if (!busy)
                                        RL_EXIT(0);
                                fds[1].fd = -1;
                        } else if (n < 0) {
                                RL_EXIT(0);
                        } else {
                                busy = 1;
                                buf[n] = '\0';
                                cli_write(sock, buf);
                        }
                }
        }
}


static void v_noreturn_
usage(int status)
{
        fprintf(stderr,
            "Usage: varnishadm [-h] [-n workdir] [-p] [-S secretfile] "
            "[-T [address]:port] [-t timeout] [command [...]]\n");
        fprintf(stderr, "\t-n is mutually exclusive with -S and -T\n");
        exit(status);
}

static int
n_arg_sock(const char *n_arg, const char *t_arg)
{
        char *T_arg, *T_start;
        char *S_arg;
        struct vsm *vsm;
        char *p;
        int sock;

        vsm = VSM_New();
        AN(vsm);
        if (VSM_Arg(vsm, 'n', n_arg) < 0 ||
            VSM_Arg(vsm, 't', t_arg) < 0 ||
            VSM_Attach(vsm, STDERR_FILENO) < 0) {
                fprintf(stderr, "%s\n", VSM_Error(vsm));
                VSM_Destroy(&vsm);
                return (-1);
        }

        T_start = T_arg = VSM_Dup(vsm, "Arg", "-T");
        S_arg = VSM_Dup(vsm, "Arg", "-S");
        VSM_Destroy(&vsm);

        if (T_arg == NULL) {
                fprintf(stderr, "No -T in shared memory\n");
                return (-1);
        }

        sock = -1;
        while (*T_arg) {
                p = strchr(T_arg, '\n');
                AN(p);
                *p = '\0';
                sock = cli_sock(T_arg, S_arg);
                if (sock >= 0)
                        break;
                T_arg = p + 1;
        }
        free(T_start);
        free(S_arg);
        return (sock);
}

static int
t_arg_timeout(const char *t_arg)
{
        char *p = NULL;

        AN(t_arg);
        timeout = strtod(t_arg, &p);
        if ((p != NULL && *p != '\0') ||
            !isfinite(timeout) || timeout < 0) {
                fprintf(stderr, "-t: Invalid argument: %s", t_arg);
                return (-1);
        }
        return (1);
}

#define OPTARG "hn:pS:T:t:"

int
main(int argc, char * const *argv)
{
        const char *T_arg = NULL;
        const char *S_arg = NULL;
        const char *n_arg = NULL;
        const char *t_arg = NULL;
        int opt, sock;

        if (argc == 2 && !strcmp(argv[1], "--optstring")) {
                printf(OPTARG "\n");
                exit(0);
        }
        /*
         * By default linux::getopt(3) mangles the argv order, such that
         *      varnishadm -n bla param.set foo -bar
         * gets interpreted as
         *      varnishadm -n bla -bar param.set foo
         * The '+' stops that from happening
         * See #1496
         */
        while ((opt = getopt(argc, argv, "+" OPTARG)) != -1) {
                switch (opt) {
                case 'h':
                        /* Usage help */
                        usage(0);
                case 'n':
                        n_arg = optarg;
                        break;
                case 'p':
                        p_arg = 1;
                        break;
                case 'S':
                        S_arg = optarg;
                        break;
                case 'T':
                        T_arg = optarg;
                        break;
                case 't':
                        t_arg = optarg;
                        break;
                default:
                        usage(1);
                }
        }

        argc -= optind;
        argv += optind;

        if (T_arg != NULL) {
                if (n_arg != NULL)
                        usage(1);
                sock = cli_sock(T_arg, S_arg);
        } else {
                if (S_arg != NULL)
                        usage(1);
                sock = n_arg_sock(n_arg, t_arg);
        }
        if (sock < 0)
                exit(2);

        if (t_arg != NULL && t_arg_timeout(t_arg) < 0)
                exit(2);

        if (argc > 0) {
                VSIG_Arm_int();
                VSIG_Arm_term();
                do_args(sock, argc, argv);
                NEEDLESS(exit(0));
        }

        if (isatty(0) && !p_arg)
                interactive(sock);
        else
                pass(sock);
        NEEDLESS(exit(0));
}

		varnish-cache/bin/varnishadm/varnishadm.c
0		/*-
1		* Copyright (c) 2006 Verdens Gang AS
2		* Copyright (c) 2006-2015 Varnish Software AS
3		* All rights reserved.
4		*
5		* Author: Cecilie Fritzvold <cecilihf@linpro.no>
6		*
7		* SPDX-License-Identifier: BSD-2-Clause
8		*
9		* Redistribution and use in source and binary forms, with or without
10		* modification, are permitted provided that the following conditions
11		* are met:
12		* 1. Redistributions of source code must retain the above copyright
13		* notice, this list of conditions and the following disclaimer.
14		* 2. Redistributions in binary form must reproduce the above copyright
15		* notice, this list of conditions and the following disclaimer in the
16		* documentation and/or other materials provided with the distribution.
17		*
18		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21		* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
22		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28		* SUCH DAMAGE.
29		*/
30
31		#include "config.h"
32
33		#include <sys/types.h>
34		#include <sys/socket.h>
35
36		#include <stdio.h>
37
38		#if defined(HAVE_EDIT_READLINE_READLINE_H)
39		# include <edit/readline/readline.h>
40		#elif defined(HAVE_LIBEDIT)
41		# include <editline/readline.h>
42		#elif defined (HAVE_READLINE_READLINE_H)
43		# include <readline/readline.h>
44		# ifdef HAVE_READLINE_HISTORY_H
45		# include <readline/history.h>
46		# else
47		# error missing history.h - this should have got caught in configure
48		# endif
49		#else
50		# error missing readline.h - this should have got caught in configure
51		#endif
52
53		#include <math.h>
54		#include <fcntl.h>
55		#include <poll.h>
56		#include <stdint.h>
57		#include <stdlib.h>
58		#include <string.h>
59		#include <unistd.h>
60
61		#include "vdef.h"
62
63		#include "vqueue.h"
64
65		#include "vapi/vsig.h"
66		#include "vapi/vsm.h"
67		#include "vas.h"
68		#include "vcli.h"
69		#include "vjsn.h"
70		#include "vtcp.h"
71
72		#define RL_EXIT(status) \
73		do { \
74		rl_callback_handler_remove(); \
75		exit(status); \
76		} while (0)
77
78		enum pass_mode_e {
79		pass_script,
80		pass_interactive,
81		};
82
83		static double timeout = 5;
84		static int p_arg = 0;
85		static int line_sock;
86
87		static void
88	1200	cli_write(int sock, const char *s)
89		{
90		int i, l;
91
92	1200	i = strlen(s);
93	1200	l = write (sock, s, i);
94	1200	if (i == l)
95	1200	return;
96	0	perror("Write error CLI socket");
97	0	RL_EXIT(1);
98	1200	}
99
100		/*
101		* This function establishes a connection to the specified ip and port and
102		* sends a command to varnishd. If varnishd returns an OK status, the result
103		* is printed and 0 returned. Else, an error message is printed and 1 is
104		* returned
105		*/
106		static int
107	192	cli_sock(const char T_arg, const char S_arg)
108		{
109		int fd;
110		int sock;
111		unsigned status;
112	192	char *answer = NULL;
113		char buf[CLI_AUTH_RESPONSE_LEN + 1];
114		const char *err;
115
116	192	sock = VTCP_open(T_arg, NULL, timeout, &err);
117	192	if (sock < 0) {
118	4	fprintf(stderr, "Connection failed (%s): %s\n", T_arg, err);
119	4	return (-1);
120		}
121
122	188	(void)VCLI_ReadResult(sock, &status, &answer, timeout);
123	188	if (status == CLIS_AUTH) {
124	184	if (S_arg == NULL) {
125	4	fprintf(stderr, "Authentication required\n");
126	4	free(answer);
127	4	closefd(&sock);
128	4	return (-1);
129		}
130	180	fd = open(S_arg, O_RDONLY);
131	180	if (fd < 0) {
132	8	fprintf(stderr, "Cannot open \"%s\": %s\n",
133	4	S_arg, strerror(errno));
134	4	closefd(&sock);
135	4	free(answer);
136	4	return (-1);
137		}
138	176	VCLI_AuthResponse(fd, answer, buf);
139	176	closefd(&fd);
140	176	free(answer);
141
142	176	cli_write(sock, "auth ");
143	176	cli_write(sock, buf);
144	176	cli_write(sock, "\n");
145	176	(void)VCLI_ReadResult(sock, &status, &answer, timeout);
146	176	}
147	180	if (status != CLIS_OK && status != CLIS_TRUNCATED) {
148	8	fprintf(stderr, "Rejected %u\n%s\n", status, answer);
149	8	closefd(&sock);
150	8	free(answer);
151	8	return (-1);
152		}
153	172	free(answer);
154
155	172	cli_write(sock, "ping\n");
156	172	(void)VCLI_ReadResult(sock, &status, &answer, timeout);
157	172	if (status != CLIS_OK \|\| strstr(answer, "PONG") == NULL) {
158	4	fprintf(stderr, "No pong received from server\n");
159	4	closefd(&sock);
160	4	free(answer);
161	4	return (-1);
162		}
163	168	free(answer);
164
165	168	return (sock);
166	192	}
167
168		static unsigned
169	192	pass_answer(int fd, enum pass_mode_e mode)
170		{
171		unsigned u, status;
172	192	char *answer = NULL;
173
174	192	u = VCLI_ReadResult(fd, &status, &answer, timeout);
175	192	if (u) {
176	0	if (status == CLIS_COMMS) {
177	0	fprintf(stderr, "%s\n", answer);
178	0	RL_EXIT(2);
179	0	}
180	0	if (answer)
181	0	fprintf(stderr, "%s\n", answer);
182	0	RL_EXIT(1);
183	0	}
184
185	192	if (p_arg && answer != NULL) {
186	28	printf("%-3u %-8zu\n%s", status, strlen(answer), answer);
187	192	} else if (p_arg) {
188	0	printf("%-3u %-8u\n", status, 0U);
189	0	} else {
190	164	if (mode == pass_interactive)
191	20	printf("%u\n", status);
192	164	if (answer != NULL)
193	164	printf("%s\n", answer);
194	164	if (status == CLIS_TRUNCATED)
195	4	printf("[response was truncated]\n");
196		}
197	192	free(answer);
198	192	(void)fflush(stdout);
199	192	return (status);
200		}
201
202		static void v_noreturn_
203	144	do_args(int sock, int argc, char * const *argv)
204		{
205		int i;
206		unsigned status;
207
208	352	for (i = 0; i < argc; i++) {
209		/* XXX: We should really CLI-quote these */
210	208	if (i > 0)
211	64	cli_write(sock, " ");
212	208	cli_write(sock, argv[i]);
213	208	}
214	144	cli_write(sock, "\n");
215	144	status = pass_answer(sock, pass_script);
216	144	closefd(&sock);
217	144	if (status == CLIS_OK \|\| status == CLIS_TRUNCATED)
218	116	exit(0);
219	28	if (!p_arg)
220	28	fprintf(stderr, "Command failed with error code %u\n", status);
221	28	exit(1);
222		}
223
224		/* Callback for readline, doesn't take a private pointer, so we need
225		* to have a global variable.
226		*/
227		static void v_matchproto_()
228	16	send_line(char *l)
229		{
230	16	if (l) {
231	16	cli_write(line_sock, l);
232	16	cli_write(line_sock, "\n");
233	16	if (*l)
234	16	add_history(l);
235	16	rl_callback_handler_install("varnish> ", send_line);
236	16	} else {
237	0	RL_EXIT(0);
238		}
239	16	}
240
241		static char *
242	56	command_generator (const char *text, int state)
243		{
244		static struct vjsn *jsn_cmds;
245		static const struct vjsn_val *jv;
246		struct vjsn_val *jv2;
247		unsigned u;
248	56	char *answer = NULL;
249		const char *err;
250
251	56	if (!state) {
252	20	cli_write(line_sock, "help -j\n");
253	20	u = VCLI_ReadResult(line_sock, NULL, &answer, timeout);
254	20	if (u) {
255	0	free(answer);
256	0	return (NULL);
257		}
258	20	jsn_cmds = vjsn_parse(answer, &err);
259	20	free(answer);
260	20	if (err != NULL)
261	0	return (NULL);
262	20	AN(jsn_cmds);
263	20	AN(jsn_cmds->value);
264	20	assert (vjsn_is_array(jsn_cmds->value));
265	20	jv = VTAILQ_FIRST(&jsn_cmds->value->children);
266	20	assert (vjsn_is_number(jv));
267	20	jv = VTAILQ_NEXT(jv, list);
268	20	assert (vjsn_is_array(jv));
269	20	jv = VTAILQ_NEXT(jv, list);
270	20	assert (vjsn_is_number(jv));
271	20	jv = VTAILQ_NEXT(jv, list);
272	20	}
273	780	while (jv != NULL) {
274	760	assert (vjsn_is_object(jv));
275	760	jv2 = VTAILQ_FIRST(&jv->children);
276	760	AN(jv2);
277	760	jv = VTAILQ_NEXT(jv, list);
278	760	assert (vjsn_is_string(jv2));
279	760	assert (!strcmp(jv2->name, "request"));
280	760	if (!strncmp(text, jv2->value, strlen(text)))
281	36	return (strdup(jv2->value));
282		}
283	20	vjsn_delete(&jsn_cmds);
284	20	return (NULL);
285	56	}
286
287		static char **
288	20	varnishadm_completion (const char *text, int start, int end)
289		{
290		char **matches;
291	20	(void)end;
292	20	matches = (char **)NULL;
293	20	if (start == 0)
294	20	matches = rl_completion_matches(text, command_generator);
295	20	return (matches);
296		}
297
298
299		/*
300		* No arguments given, simply pass bytes on stdin/stdout and CLI socket
301		* Send a "banner" to varnish, to provoke a welcome message.
302		*/
303		static void v_noreturn_
304	4	interactive(int sock)
305		{
306		struct pollfd fds[2];
307		int i;
308		unsigned status;
309	4	line_sock = sock;
310	4	rl_already_prompted = 1;
311	4	rl_callback_handler_install("varnish> ", send_line);
312	4	rl_attempted_completion_function = varnishadm_completion;
313
314	4	fds[0].fd = sock;
315	4	fds[0].events = POLLIN;
316	4	fds[1].fd = 0;
317	4	fds[1].events = POLLIN;
318
319	4	cli_write(sock, "banner\n");
320	152	while (1) {
321	152	i = poll(fds, 2, -1);
322	152	if (i == -1 && errno == EINTR) {
323	0	continue;
324		}
325	152	assert(i > 0);
326	152	if (fds[0].revents & POLLIN) {
327		/* Get rid of the prompt, kinda hackish */
328	20	printf("\r \r");
329	20	status = pass_answer(fds[0].fd, pass_interactive);
330	20	rl_forced_update_display();
331	20	if (status == CLIS_CLOSE)
332	4	RL_EXIT(0);
333	16	}
334	148	if (fds[1].revents & POLLIN) {
335	132	rl_callback_read_char();
336	132	}
337		}
338		}
339
340		/*
341		* No arguments given, simply pass bytes on stdin/stdout and CLI socket
342		*/
343		static void v_noreturn_
344	20	pass(int sock)
345		{
346		struct pollfd fds[2];
347		char buf[1024];
348		int i;
349		ssize_t n;
350	20	int busy = 0;
351
352	20	fds[0].fd = sock;
353	20	fds[0].events = POLLIN;
354	20	fds[1].fd = 0;
355	20	fds[1].events = POLLIN;
356	76	while (1) {
357	76	i = poll(fds, 2, -1);
358	76	if (i == -1 && errno == EINTR) {
359	0	continue;
360		}
361	76	assert(i > 0);
362	76	if (fds[0].revents & POLLIN) {
363	28	(void)pass_answer(fds[0].fd, pass_script);
364	28	busy = 0;
365	28	if (fds[1].fd < 0)
366	16	RL_EXIT(0);
367	12	}
368	60	if (fds[1].revents & POLLIN \|\| fds[1].revents & POLLHUP) {
369	48	n = read(fds[1].fd, buf, sizeof buf - 1);
370	48	if (n == 0) {
371	20	if (!busy)
372	4	RL_EXIT(0);
373	16	fds[1].fd = -1;
374	44	} else if (n < 0) {
375	0	RL_EXIT(0);
376	0	} else {
377	28	busy = 1;
378	28	buf[n] = '\0';
379	28	cli_write(sock, buf);
380		}
381	44	}
382		}
383		}
384
385
386		static void v_noreturn_
387	12	usage(int status)
388		{
389	12	fprintf(stderr,
390		"Usage: varnishadm [-h] [-n workdir] [-p] [-S secretfile] "
391		"[-T [address]:port] [-t timeout] [command [...]]\n");
392	12	fprintf(stderr, "\t-n is mutually exclusive with -S and -T\n");
393	12	exit(status);
394		}
395
396		static int
397	172	n_arg_sock(const char n_arg, const char t_arg)
398		{
399		char T_arg, T_start;
400		char *S_arg;
401		struct vsm *vsm;
402		char *p;
403		int sock;
404
405	172	vsm = VSM_New();
406	172	AN(vsm);
407	340	if (VSM_Arg(vsm, 'n', n_arg) < 0 \|\|
408	172	VSM_Arg(vsm, 't', t_arg) < 0 \|\|
409	168	VSM_Attach(vsm, STDERR_FILENO) < 0) {
410	8	fprintf(stderr, "%s\n", VSM_Error(vsm));
411	8	VSM_Destroy(&vsm);
412	8	return (-1);
413		}
414
415	164	T_start = T_arg = VSM_Dup(vsm, "Arg", "-T");
416	164	S_arg = VSM_Dup(vsm, "Arg", "-S");
417	164	VSM_Destroy(&vsm);
418
419	164	if (T_arg == NULL) {
420	0	fprintf(stderr, "No -T in shared memory\n");
421	0	return (-1);
422		}
423
424	164	sock = -1;
425	164	while (*T_arg) {
426	164	p = strchr(T_arg, '\n');
427	164	AN(p);
428	164	*p = '\0';
429	164	sock = cli_sock(T_arg, S_arg);
430	164	if (sock >= 0)
431	164	break;
432	0	T_arg = p + 1;
433		}
434	164	free(T_start);
435	164	free(S_arg);
436	164	return (sock);
437	172	}
438
439		static int
440	12	t_arg_timeout(const char *t_arg)
441		{
442	12	char *p = NULL;
443
444	12	AN(t_arg);
445	12	timeout = strtod(t_arg, &p);
446	24	if ((p != NULL && *p != '\0') \|\|
447	12	!isfinite(timeout) \|\| timeout < 0) {
448	0	fprintf(stderr, "-t: Invalid argument: %s", t_arg);
449	0	return (-1);
450		}
451	12	return (1);
452	12	}
453
454		#define OPTARG "hn:pS:T:t:"
455
456		int
457	212	main(int argc, char * const *argv)
458		{
459	212	const char *T_arg = NULL;
460	212	const char *S_arg = NULL;
461	212	const char *n_arg = NULL;
462	212	const char *t_arg = NULL;
463		int opt, sock;
464
465	212	if (argc == 2 && !strcmp(argv[1], "--optstring")) {
466	0	printf(OPTARG "\n");
467	0	exit(0);
468		}
469		/*
470		* By default linux::getopt(3) mangles the argv order, such that
471		* varnishadm -n bla param.set foo -bar
472		* gets interpreted as
473		* varnishadm -n bla -bar param.set foo
474		* The '+' stops that from happening
475		* See #1496
476		*/
477	468	while ((opt = getopt(argc, argv, "+" OPTARG)) != -1) {
478	268	switch (opt) {
479		case 'h':
480		/* Usage help */
481	4	usage(0);
482		case 'n':
483	164	n_arg = optarg;
484	164	break;
485		case 'p':
486	20	p_arg = 1;
487	20	break;
488		case 'S':
489	24	S_arg = optarg;
490	24	break;
491		case 'T':
492	28	T_arg = optarg;
493	28	break;
494		case 't':
495	20	t_arg = optarg;
496	20	break;
497		default:
498	8	usage(1);
499		}