summaryrefslogtreecommitdiffstats
path: root/source3/utils/interact.c
blob: f8fed6de19891163ed70cc09b1c257d1f0267a4a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
/*
 * Samba Unix/Linux SMB client library
 *
 * Copyright (C) Gregor Beck 2011
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/**
 * @brief  Functions to interact with an user.
 * @author Gregor Beck <gb@sernet.de>
 * @date   Aug 2011
 *
 */

#include "includes.h"
#include "system/filesys.h"

#include "interact.h"

#include <termios.h>

static const char* get_editor(void) {
	static char editor[64] = {0};

	if (editor[0] == '\0') {
		const char *tmp = getenv("VISUAL");
		if (tmp == NULL) {
			tmp = getenv("EDITOR");
		}
		if (tmp == NULL) {
			tmp = "vi";
		}
		snprintf(editor, sizeof(editor), "%s", tmp);
	}

	return editor;
}

int interact_prompt(const char* msg, const char* acc, char def) {
	struct termios old_tio, new_tio;
	int c;

	tcgetattr(STDIN_FILENO, &old_tio);
	new_tio=old_tio;
	new_tio.c_lflag &=(~ICANON & ~ECHO);
	tcsetattr(STDIN_FILENO, TCSANOW, &new_tio);

	do {
		d_printf("%s? [%c]\n", msg, def);
		fflush(stdout);
		c = getchar();
		if (c == '\n') {
			c = def;
			break;
		}
		else if (strchr(acc, tolower(c)) != NULL) {
			break;
		}
		d_printf("Invalid input '%c'\n", c);
	} while(c != EOF);
	tcsetattr(STDIN_FILENO, TCSANOW, &old_tio);
	return c;
}


char* interact_edit(TALLOC_CTX* mem_ctx, const char* str) {
	char fname[] = "/tmp/net_idmap_check.XXXXXX";
	char buf[128];
	char* ret = NULL;
	FILE* file;
	mode_t mask;
	int fd;

	mask = umask(S_IRWXO | S_IRWXG);
	fd = mkstemp(fname);
	umask(mask);
	if (fd == -1) {
		DEBUG(0, ("failed to mkstemp %s: %s\n", fname,
			  strerror(errno)));
		return NULL;
	}

	file  = fdopen(fd, "w");
	if (!file) {
		DEBUG(0, ("failed to open %s for writing: %s\n", fname,
			  strerror(errno)));
		close(fd);
		unlink(fname);
		return NULL;
	}

	fprintf(file, "%s", str);
	fclose(file);

	snprintf(buf, sizeof(buf), "%s %s\n", get_editor(), fname);
	if (system(buf) != 0) {
		DEBUG(0, ("failed to start editor %s: %s\n", buf,
			  strerror(errno)));
		unlink(fname);
		return NULL;
	}

	file = fopen(fname, "r");
	if (!file) {
		DEBUG(0, ("failed to open %s for reading: %s\n", fname,
			  strerror(errno)));
		unlink(fname);
		return NULL;
	}
	while ( fgets(buf, sizeof(buf), file) ) {
		ret = talloc_strdup_append(ret, buf);
	}
	fclose(file);
	unlink(fname);

	return talloc_steal(mem_ctx, ret);
}



/*Local Variables:*/
/*mode: c*/
/*End:*/