summaryrefslogtreecommitdiffstats
path: root/tools/idevicescreenshot.c
blob: 74acdf6ab2e91a14ad4cd19531ef1b9594fbd80d (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
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
/*
 * idevicescreenshot.c
 * Gets a screenshot from a device
 *
 * Copyright (C) 2010 Nikias Bassen <nikias@gmx.li>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <time.h>

#include <libimobiledevice/libimobiledevice.h>
#include <libimobiledevice/lockdown.h>
#include <libimobiledevice/screenshotr.h>

void print_usage(int argc, char **argv);

int main(int argc, char **argv)
{
	idevice_t device = NULL;
	lockdownd_client_t lckd = NULL;
	lockdownd_error_t ldret = LOCKDOWN_E_UNKNOWN_ERROR;
	screenshotr_client_t shotr = NULL;
	lockdownd_service_descriptor_t service = NULL;
	int result = -1;
	int i;
	const char *udid = NULL;
	char *filename = NULL;

	/* parse cmdline args */
	for (i = 1; i < argc; i++) {
		if (!strcmp(argv[i], "-d") || !strcmp(argv[i], "--debug")) {
			idevice_set_debug_level(1);
			continue;
		}
		else if (!strcmp(argv[i], "-u") || !strcmp(argv[i], "--udid")) {
			i++;
			if (!argv[i] || (strlen(argv[i]) != 40)) {
				print_usage(argc, argv);
				return 0;
			}
			udid = argv[i];
			continue;
		}
		else if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help")) {
			print_usage(argc, argv);
			return 0;
		}
		else if (argv[i][0] != '-' && !filename) {
			filename = strdup(argv[i]);
			continue;
		}
		else {
			print_usage(argc, argv);
			return 0;
		}
	}

	if (IDEVICE_E_SUCCESS != idevice_new(&device, udid)) {
		if (udid) {
			printf("No device found with udid %s, is it plugged in?\n", udid);
		} else {
			printf("No device found, is it plugged in?\n");
		}
		return -1;
	}

	if (LOCKDOWN_E_SUCCESS != (ldret = lockdownd_client_new_with_handshake(device, &lckd, NULL))) {
		idevice_free(device);
		printf("ERROR: Could not connect to lockdownd, error code %d\n", ldret);
		return -1;
	}

	lockdownd_start_service(lckd, "com.apple.mobile.screenshotr", &service);
	lockdownd_client_free(lckd);
	if (service && service->port > 0) {
		if (screenshotr_client_new(device, service, &shotr) != SCREENSHOTR_E_SUCCESS) {
			printf("Could not connect to screenshotr!\n");
		} else {
			char *imgdata = NULL;
			uint64_t imgsize = 0;
			if (screenshotr_take_screenshot(shotr, &imgdata, &imgsize) == SCREENSHOTR_E_SUCCESS) {
				if (!filename) {
					const char *fileext = NULL;
					if (memcmp(imgdata, "\x89PNG", 4) == 0) {
						fileext = ".png";
					} else if (memcmp(imgdata, "MM\x00*", 4) == 0) {
						fileext = ".tiff";
					} else {
						printf("WARNING: screenshot data has unexpected image format.\n");
						fileext = ".dat";
					}
					time_t now = time(NULL);
					filename = (char*)malloc(36);
					size_t pos = strftime(filename, 36, "screenshot-%Y-%m-%d-%H-%M-%S", gmtime(&now));
					sprintf(filename+pos, "%s", fileext);
				}
				FILE *f = fopen(filename, "wb");
				if (f) {
					if (fwrite(imgdata, 1, (size_t)imgsize, f) == (size_t)imgsize) {
						printf("Screenshot saved to %s\n", filename);
						result = 0;
					} else {
						printf("Could not save screenshot to file %s!\n", filename);
					}
					fclose(f);
				} else {
					printf("Could not open %s for writing: %s\n", filename, strerror(errno));
				}
			} else {
				printf("Could not get screenshot!\n");
			}
			screenshotr_client_free(shotr);
		}
	} else {
		printf("Could not start screenshotr service! Remember that you have to mount the Developer disk image on your device if you want to use the screenshotr service.\n");
	}

	if (service)
		lockdownd_service_descriptor_free(service);

	idevice_free(device);
	free(filename);

	return result;
}

void print_usage(int argc, char **argv)
{
	char *name = NULL;

	name = strrchr(argv[0], '/');
	printf("Usage: %s [OPTIONS] [FILE]\n", (name ? name + 1: argv[0]));
	printf("Gets a screenshot from a device.\n");
	printf("The screenshot is saved as a TIFF image with the given FILE name,\n");
	printf("where the default name is \"screenshot-DATE.tiff\", e.g.:\n");
	printf("   ./screenshot-2013-12-31-23-59-59.tiff\n\n");
	printf("NOTE: A mounted developer disk image is required on the device, otherwise\n");
	printf("the screenshotr service is not available.\n\n");
	printf("  -d, --debug\t\tenable communication debugging\n");
	printf("  -u, --udid UDID\ttarget specific device by its 40-digit device UDID\n");
	printf("  -h, --help\t\tprints usage information\n");
	printf("\n");
	printf("Homepage: <" PACKAGE_URL ">\n");
}