1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2013
4 *
5 * Written by Guilherme Maciel Ferreira <guilherme.maciel.ferreira@gmail.com>
6 */
7
8 #include "imagetool.h"
9
10 #include <image.h>
11
imagetool_get_type(int type)12 struct image_type_params *imagetool_get_type(int type)
13 {
14 struct image_type_params **curr;
15 INIT_SECTION(image_type);
16
17 struct image_type_params **start = __start_image_type;
18 struct image_type_params **end = __stop_image_type;
19
20 for (curr = start; curr != end; curr++) {
21 if ((*curr)->check_image_type) {
22 if (!(*curr)->check_image_type(type))
23 return *curr;
24 }
25 }
26 return NULL;
27 }
28
imagetool_verify_print_header(void * ptr,struct stat * sbuf,struct image_type_params * tparams,struct image_tool_params * params)29 int imagetool_verify_print_header(
30 void *ptr,
31 struct stat *sbuf,
32 struct image_type_params *tparams,
33 struct image_tool_params *params)
34 {
35 int retval = -1;
36 struct image_type_params **curr;
37 INIT_SECTION(image_type);
38
39 struct image_type_params **start = __start_image_type;
40 struct image_type_params **end = __stop_image_type;
41
42 for (curr = start; curr != end; curr++) {
43 if ((*curr)->verify_header) {
44 retval = (*curr)->verify_header((unsigned char *)ptr,
45 sbuf->st_size, params);
46
47 if (retval == 0) {
48 /*
49 * Print the image information if verify is
50 * successful
51 */
52 if ((*curr)->print_header) {
53 if (!params->quiet)
54 (*curr)->print_header(ptr);
55 } else {
56 fprintf(stderr,
57 "%s: print_header undefined for %s\n",
58 params->cmdname, (*curr)->name);
59 }
60 break;
61 }
62 }
63 }
64
65 return retval;
66 }
67
imagetool_verify_print_header_by_type(void * ptr,struct stat * sbuf,struct image_type_params * tparams,struct image_tool_params * params)68 int imagetool_verify_print_header_by_type(
69 void *ptr,
70 struct stat *sbuf,
71 struct image_type_params *tparams,
72 struct image_tool_params *params)
73 {
74 int retval;
75
76 retval = tparams->verify_header((unsigned char *)ptr, sbuf->st_size,
77 params);
78
79 if (retval == 0) {
80 /*
81 * Print the image information if verify is successful
82 */
83 if (tparams->print_header) {
84 if (!params->quiet)
85 tparams->print_header(ptr);
86 } else {
87 fprintf(stderr,
88 "%s: print_header undefined for %s\n",
89 params->cmdname, tparams->name);
90 }
91 } else {
92 fprintf(stderr,
93 "%s: verify_header failed for %s with exit code %d\n",
94 params->cmdname, tparams->name, retval);
95 }
96
97 return retval;
98 }
99
imagetool_save_subimage(const char * file_name,ulong file_data,ulong file_len)100 int imagetool_save_subimage(
101 const char *file_name,
102 ulong file_data,
103 ulong file_len)
104 {
105 int dfd;
106
107 dfd = open(file_name, O_RDWR | O_CREAT | O_TRUNC | O_BINARY,
108 S_IRUSR | S_IWUSR);
109 if (dfd < 0) {
110 fprintf(stderr, "Can't open \"%s\": %s\n",
111 file_name, strerror(errno));
112 return -1;
113 }
114
115 if (write(dfd, (void *)file_data, file_len) != (ssize_t)file_len) {
116 fprintf(stderr, "Write error on \"%s\": %s\n",
117 file_name, strerror(errno));
118 close(dfd);
119 return -1;
120 }
121
122 close(dfd);
123
124 return 0;
125 }
126
imagetool_get_filesize(struct image_tool_params * params,const char * fname)127 int imagetool_get_filesize(struct image_tool_params *params, const char *fname)
128 {
129 struct stat sbuf;
130 int fd;
131
132 fd = open(fname, O_RDONLY | O_BINARY);
133 if (fd < 0) {
134 fprintf(stderr, "%s: Can't open %s: %s\n",
135 params->cmdname, fname, strerror(errno));
136 return -1;
137 }
138
139 if (fstat(fd, &sbuf) < 0) {
140 fprintf(stderr, "%s: Can't stat %s: %s\n",
141 params->cmdname, fname, strerror(errno));
142 close(fd);
143 return -1;
144 }
145 close(fd);
146
147 return sbuf.st_size;
148 }
149
imagetool_get_source_date(const char * cmdname,time_t fallback)150 time_t imagetool_get_source_date(
151 const char *cmdname,
152 time_t fallback)
153 {
154 char *source_date_epoch = getenv("SOURCE_DATE_EPOCH");
155
156 if (source_date_epoch == NULL)
157 return fallback;
158
159 time_t time = (time_t) strtol(source_date_epoch, NULL, 10);
160
161 if (gmtime(&time) == NULL) {
162 fprintf(stderr, "%s: SOURCE_DATE_EPOCH is not valid\n",
163 cmdname);
164 time = 0;
165 }
166
167 return time;
168 }
169