6 |
* written by glenn mcgrath with the help of others |
* written by glenn mcgrath with the help of others |
7 |
* copyright (c) 2001 by glenn mcgrath |
* copyright (c) 2001 by glenn mcgrath |
8 |
* |
* |
9 |
|
* parts of the version comparison code is plucked from the real dpkg |
10 |
|
* application which is licensed GPLv2 and |
11 |
|
* copyright (c) 1995 Ian Jackson <ian@chiark.greenend.org.uk> |
12 |
|
* |
13 |
* started life as a busybox implementation of udpkg |
* started life as a busybox implementation of udpkg |
14 |
* |
* |
15 |
* licensed under gplv2 or later, see file license in this tarball for details. |
* licensed under gplv2 or later, see file license in this tarball for details. |
139 |
/* shifts the ascii based value and adds it to previous value |
/* shifts the ascii based value and adds it to previous value |
140 |
* shift amount is mod 24 because long int is 32 bit and data |
* shift amount is mod 24 because long int is 32 bit and data |
141 |
* to be shifted is 8, don't want to shift data to where it has |
* to be shifted is 8, don't want to shift data to where it has |
142 |
* no effect*/ |
* no effect */ |
143 |
hash_num += (key[i] + key[i-1]) << ((key[i] * i) % 24); |
hash_num += (key[i] + key[i-1]) << ((key[i] * i) % 24); |
144 |
} |
} |
145 |
*start = (unsigned) hash_num % hash_prime; |
*start = (unsigned) hash_num % hash_prime; |
187 |
return probe_address; |
return probe_address; |
188 |
} |
} |
189 |
|
|
190 |
/* Need to rethink version comparison, maybe the official dpkg has something i can use ? */ |
static int order(char x) |
|
static int version_compare_part(const char *version1, const char *version2) |
|
191 |
{ |
{ |
192 |
int upstream_len1 = 0; |
return (x == '~' ? -1 |
193 |
int upstream_len2 = 0; |
: x == '\0' ? 0 |
194 |
char *name1_char; |
: isdigit(x) ? 0 |
195 |
char *name2_char; |
: isalpha(x) ? x |
196 |
int len1 = 0; |
: (unsigned char)x + 256 |
197 |
int len2 = 0; |
); |
198 |
int tmp_int; |
} |
199 |
int ver_num1; |
|
200 |
int ver_num2; |
/* This code is taken from dpkg and modified slightly to work with busybox */ |
201 |
|
static int version_compare_part(const char *val, const char *ref) |
202 |
if (version1 == NULL) { |
{ |
203 |
version1 = xstrdup(""); |
if (!val) val = ""; |
204 |
} |
if (!ref) ref = ""; |
205 |
if (version2 == NULL) { |
|
206 |
version2 = xstrdup(""); |
while (*val || *ref) { |
207 |
} |
int first_diff; |
208 |
upstream_len1 = strlen(version1); |
|
209 |
upstream_len2 = strlen(version2); |
while ((*val && !isdigit(*val)) || (*ref && !isdigit(*ref))) { |
210 |
|
int vc = order(*val); |
211 |
while ((len1 < upstream_len1) || (len2 < upstream_len2)) { |
int rc = order(*ref); |
212 |
/* Compare non-digit section */ |
if (vc != rc) |
213 |
tmp_int = strcspn(&version1[len1], "0123456789"); |
return vc - rc; |
214 |
name1_char = xstrndup(&version1[len1], tmp_int); |
val++; |
215 |
len1 += tmp_int; |
ref++; |
216 |
tmp_int = strcspn(&version2[len2], "0123456789"); |
} |
217 |
name2_char = xstrndup(&version2[len2], tmp_int); |
|
218 |
len2 += tmp_int; |
while (*val == '0') |
219 |
tmp_int = strcmp(name1_char, name2_char); |
val++; |
220 |
free(name1_char); |
while (*ref == '0') |
221 |
free(name2_char); |
ref++; |
222 |
if (tmp_int != 0) { |
|
223 |
return tmp_int; |
first_diff = 0; |
224 |
} |
while (isdigit(*val) && isdigit(*ref)) { |
225 |
|
if (first_diff == 0) |
226 |
/* Compare digits */ |
first_diff = *val - *ref; |
227 |
tmp_int = strspn(&version1[len1], "0123456789"); |
val++; |
228 |
name1_char = xstrndup(&version1[len1], tmp_int); |
ref++; |
|
len1 += tmp_int; |
|
|
tmp_int = strspn(&version2[len2], "0123456789"); |
|
|
name2_char = xstrndup(&version2[len2], tmp_int); |
|
|
len2 += tmp_int; |
|
|
ver_num1 = atoi(name1_char); |
|
|
ver_num2 = atoi(name2_char); |
|
|
free(name1_char); |
|
|
free(name2_char); |
|
|
if (ver_num1 < ver_num2) { |
|
|
return -1; |
|
229 |
} |
} |
230 |
if (ver_num1 > ver_num2) { |
if (isdigit(*val)) |
231 |
return 1; |
return 1; |
232 |
} |
if (isdigit(*ref)) |
233 |
|
return -1; |
234 |
|
if (first_diff) |
235 |
|
return first_diff; |
236 |
} |
} |
237 |
return 0; |
return 0; |
238 |
} |
} |
245 |
{ |
{ |
246 |
char *ch_ver1 = name_hashtable[ver1]; |
char *ch_ver1 = name_hashtable[ver1]; |
247 |
char *ch_ver2 = name_hashtable[ver2]; |
char *ch_ver2 = name_hashtable[ver2]; |
248 |
|
unsigned long epoch1 = 0, epoch2 = 0; |
249 |
char epoch1, epoch2; |
char *colon; |
250 |
char *deb_ver1, *deb_ver2; |
char *deb_ver1, *deb_ver2; |
|
char *ver1_ptr, *ver2_ptr; |
|
251 |
char *upstream_ver1; |
char *upstream_ver1; |
252 |
char *upstream_ver2; |
char *upstream_ver2; |
253 |
int result; |
int result; |
254 |
|
|
255 |
/* Compare epoch */ |
/* Compare epoch */ |
256 |
if (ch_ver1[1] == ':') { |
colon = strchr(ch_ver1, ':'); |
257 |
epoch1 = ch_ver1[0]; |
if (colon) { |
258 |
ver1_ptr = strchr(ch_ver1, ':') + 1; |
epoch1 = atoi(ch_ver1); |
259 |
} else { |
ch_ver1 = colon + 1; |
260 |
epoch1 = '0'; |
} |
261 |
ver1_ptr = ch_ver1; |
colon = strchr(ch_ver2, ':'); |
262 |
} |
if (colon) { |
263 |
if (ch_ver2[1] == ':') { |
epoch2 = atoi(ch_ver2); |
264 |
epoch2 = ch_ver2[0]; |
ch_ver2 = colon + 1; |
|
ver2_ptr = strchr(ch_ver2, ':') + 1; |
|
|
} else { |
|
|
epoch2 = '0'; |
|
|
ver2_ptr = ch_ver2; |
|
265 |
} |
} |
266 |
if (epoch1 < epoch2) { |
if (epoch1 < epoch2) { |
267 |
return -1; |
return -1; |
268 |
} |
} |
269 |
else if (epoch1 > epoch2) { |
if (epoch1 > epoch2) { |
270 |
return 1; |
return 1; |
271 |
} |
} |
272 |
|
|
273 |
/* Compare upstream version */ |
/* Compare upstream version */ |
274 |
upstream_ver1 = xstrdup(ver1_ptr); |
upstream_ver1 = xstrdup(ch_ver1); |
275 |
upstream_ver2 = xstrdup(ver2_ptr); |
upstream_ver2 = xstrdup(ch_ver2); |
276 |
|
|
277 |
/* Chop off debian version, and store for later use */ |
/* Chop off debian version, and store for later use */ |
278 |
deb_ver1 = strrchr(upstream_ver1, '-'); |
deb_ver1 = strrchr(upstream_ver1, '-'); |
493 |
} |
} |
494 |
|
|
495 |
/* |
/* |
496 |
* Gets the next package field from package_buffer, seperated into the field name |
* Gets the next package field from package_buffer, separated into the field name |
497 |
* and field value, it returns the int offset to the first character of the next field |
* and field value, it returns the int offset to the first character of the next field |
498 |
*/ |
*/ |
499 |
static int read_package_field(const char *package_buffer, char **field_name, char **field_value) |
static int read_package_field(const char *package_buffer, char **field_name, char **field_value) |
806 |
write_flag = FALSE; |
write_flag = FALSE; |
807 |
tmp_string = strstr(control_buffer, "Status:"); |
tmp_string = strstr(control_buffer, "Status:"); |
808 |
if (tmp_string != NULL) { |
if (tmp_string != NULL) { |
809 |
/* Seperate the status value from the control buffer */ |
/* Separate the status value from the control buffer */ |
810 |
tmp_string += 7; |
tmp_string += 7; |
811 |
tmp_string += strspn(tmp_string, " \n\t"); |
tmp_string += strspn(tmp_string, " \n\t"); |
812 |
status_from_file = xstrndup(tmp_string, strcspn(tmp_string, "\n")); |
status_from_file = xstrndup(tmp_string, strcspn(tmp_string, "\n")); |
912 |
/* Create a separate backfile to dpkg */ |
/* Create a separate backfile to dpkg */ |
913 |
if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) { |
if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) { |
914 |
if (errno != ENOENT) |
if (errno != ENOENT) |
915 |
bb_error_msg_and_die("cannot create backup status file"); |
bb_error_msg_and_die("can't create backup status file"); |
916 |
/* Its ok if renaming the status file fails because status |
/* Its ok if renaming the status file fails because status |
917 |
* file doesnt exist, maybe we are starting from scratch */ |
* file doesnt exist, maybe we are starting from scratch */ |
918 |
bb_error_msg("no status file found, creating new one"); |
bb_error_msg("no status file found, creating new one"); |
1354 |
free_array(exclude_files); |
free_array(exclude_files); |
1355 |
free_array(remove_files); |
free_array(remove_files); |
1356 |
|
|
1357 |
/* Create a list of files in /var/lib/dpkg/info/<package>.* to keep */ |
/* Create a list of files in /var/lib/dpkg/info/<package>.* to keep */ |
1358 |
exclude_files = xzalloc(sizeof(char*) * 3); |
exclude_files = xzalloc(sizeof(exclude_files[0]) * 3); |
1359 |
exclude_files[0] = xstrdup(conffile_name); |
exclude_files[0] = xstrdup(conffile_name); |
1360 |
exclude_files[1] = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "postrm"); |
exclude_files[1] = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "postrm"); |
1361 |
|
|
1393 |
sprintf(list_name, "/var/lib/dpkg/info/%s.%s", package_name, "list"); |
sprintf(list_name, "/var/lib/dpkg/info/%s.%s", package_name, "list"); |
1394 |
remove_files = create_list(list_name); |
remove_files = create_list(list_name); |
1395 |
|
|
|
exclude_files = xzalloc(sizeof(char*)); |
|
|
|
|
1396 |
/* Some directories cant be removed straight away, so do multiple passes */ |
/* Some directories cant be removed straight away, so do multiple passes */ |
1397 |
while (remove_file_array(remove_files, exclude_files)) /* repeat */; |
while (remove_file_array(remove_files, NULL)) |
1398 |
|
continue; |
1399 |
free_array(remove_files); |
free_array(remove_files); |
1400 |
|
|
1401 |
/* Create a list of all /var/lib/dpkg/info/<package> files */ |
/* Create a list of all /var/lib/dpkg/info/<package> files */ |
1402 |
remove_files = all_control_list(package_name); |
remove_files = all_control_list(package_name); |
1403 |
|
|
1404 |
|
/* Delete all of them except the postrm script */ |
1405 |
|
exclude_files = xzalloc(sizeof(exclude_files[0]) * 2); |
1406 |
|
exclude_files[0] = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "postrm"); |
1407 |
remove_file_array(remove_files, exclude_files); |
remove_file_array(remove_files, exclude_files); |
1408 |
free_array(remove_files); |
free_array(exclude_files); |
|
free(exclude_files); |
|
1409 |
|
|
1410 |
/* Run postrm script */ |
/* Run and remove postrm script */ |
1411 |
run_package_script_or_die(package_name, "postrm"); |
run_package_script_or_die(package_name, "postrm"); |
1412 |
|
remove_file_array(remove_files, NULL); |
1413 |
|
|
1414 |
|
free_array(remove_files); |
1415 |
|
|
1416 |
/* Change package status */ |
/* Change package status */ |
1417 |
set_status(status_num, "not-installed", 3); |
set_status(status_num, "not-installed", 3); |
1446 |
#endif |
#endif |
1447 |
|
|
1448 |
/* Assign the tar handle as a subarchive of the ar handle */ |
/* Assign the tar handle as a subarchive of the ar handle */ |
1449 |
ar_handle->sub_archive = tar_handle; |
ar_handle->dpkg__sub_archive = tar_handle; |
1450 |
} |
} |
1451 |
|
|
1452 |
static void init_archive_deb_data(archive_handle_t *ar_handle) |
static void init_archive_deb_data(archive_handle_t *ar_handle) |
1466 |
#endif |
#endif |
1467 |
|
|
1468 |
/* Assign the tar handle as a subarchive of the ar handle */ |
/* Assign the tar handle as a subarchive of the ar handle */ |
1469 |
ar_handle->sub_archive = tar_handle; |
ar_handle->dpkg__sub_archive = tar_handle; |
1470 |
|
} |
1471 |
|
|
1472 |
|
static void FAST_FUNC data_extract_to_buffer(archive_handle_t *archive_handle) |
1473 |
|
{ |
1474 |
|
unsigned size = archive_handle->file_header->size; |
1475 |
|
|
1476 |
|
archive_handle->dpkg__buffer = xzalloc(size + 1); |
1477 |
|
xread(archive_handle->src_fd, archive_handle->dpkg__buffer, size); |
1478 |
} |
} |
1479 |
|
|
1480 |
static char *deb_extract_control_file_to_buffer(archive_handle_t *ar_handle, llist_t *myaccept) |
static char *deb_extract_control_file_to_buffer(archive_handle_t *ar_handle, llist_t *myaccept) |
1481 |
{ |
{ |
1482 |
ar_handle->sub_archive->action_data = data_extract_to_buffer; |
ar_handle->dpkg__sub_archive->action_data = data_extract_to_buffer; |
1483 |
ar_handle->sub_archive->accept = myaccept; |
ar_handle->dpkg__sub_archive->accept = myaccept; |
1484 |
ar_handle->sub_archive->filter = filter_accept_list; |
ar_handle->dpkg__sub_archive->filter = filter_accept_list; |
1485 |
|
|
1486 |
unpack_ar_archive(ar_handle); |
unpack_ar_archive(ar_handle); |
1487 |
close(ar_handle->src_fd); |
close(ar_handle->src_fd); |
1488 |
|
|
1489 |
return ar_handle->sub_archive->buffer; |
return ar_handle->dpkg__sub_archive->dpkg__buffer; |
1490 |
} |
} |
1491 |
|
|
1492 |
static void FAST_FUNC data_extract_all_prefix(archive_handle_t *archive_handle) |
static void FAST_FUNC data_extract_all_prefix(archive_handle_t *archive_handle) |
1493 |
{ |
{ |
1494 |
char *name_ptr = archive_handle->file_header->name; |
char *name_ptr = archive_handle->file_header->name; |
1495 |
|
|
1496 |
name_ptr += strspn(name_ptr, "./"); |
/* Skip all leading "/" */ |
1497 |
|
while (*name_ptr == '/') |
1498 |
|
name_ptr++; |
1499 |
|
/* Skip all leading "./" and "../" */ |
1500 |
|
while (name_ptr[0] == '.') { |
1501 |
|
if (name_ptr[1] == '.' && name_ptr[2] == '/') |
1502 |
|
name_ptr++; |
1503 |
|
if (name_ptr[1] != '/') |
1504 |
|
break; |
1505 |
|
name_ptr += 2; |
1506 |
|
} |
1507 |
|
|
1508 |
if (name_ptr[0] != '\0') { |
if (name_ptr[0] != '\0') { |
1509 |
archive_handle->file_header->name = xasprintf("%s%s", archive_handle->buffer, name_ptr); |
archive_handle->file_header->name = xasprintf("%s%s", archive_handle->dpkg__buffer, name_ptr); |
1510 |
data_extract_all(archive_handle); |
data_extract_all(archive_handle); |
1511 |
} |
} |
1512 |
} |
} |
1546 |
llist_add_to(&accept_list, c); |
llist_add_to(&accept_list, c); |
1547 |
i++; |
i++; |
1548 |
} |
} |
1549 |
archive_handle->sub_archive->accept = accept_list; |
archive_handle->dpkg__sub_archive->accept = accept_list; |
1550 |
archive_handle->sub_archive->filter = filter_accept_list; |
archive_handle->dpkg__sub_archive->filter = filter_accept_list; |
1551 |
archive_handle->sub_archive->action_data = data_extract_all_prefix; |
archive_handle->dpkg__sub_archive->action_data = data_extract_all_prefix; |
1552 |
archive_handle->sub_archive->buffer = info_prefix; |
archive_handle->dpkg__sub_archive->dpkg__buffer = info_prefix; |
1553 |
archive_handle->sub_archive->ah_flags |= ARCHIVE_EXTRACT_UNCONDITIONAL; |
archive_handle->dpkg__sub_archive->ah_flags |= ARCHIVE_UNLINK_OLD; |
1554 |
unpack_ar_archive(archive_handle); |
unpack_ar_archive(archive_handle); |
1555 |
|
|
1556 |
/* Run the preinst prior to extracting */ |
/* Run the preinst prior to extracting */ |
1559 |
/* Extract data.tar.gz to the root directory */ |
/* Extract data.tar.gz to the root directory */ |
1560 |
archive_handle = init_archive_deb_ar(deb_file->filename); |
archive_handle = init_archive_deb_ar(deb_file->filename); |
1561 |
init_archive_deb_data(archive_handle); |
init_archive_deb_data(archive_handle); |
1562 |
archive_handle->sub_archive->action_data = data_extract_all_prefix; |
archive_handle->dpkg__sub_archive->action_data = data_extract_all_prefix; |
1563 |
archive_handle->sub_archive->buffer = (char*)"/"; /* huh? */ |
archive_handle->dpkg__sub_archive->dpkg__buffer = (char*)"/"; /* huh? */ |
1564 |
archive_handle->sub_archive->ah_flags |= ARCHIVE_EXTRACT_UNCONDITIONAL; |
archive_handle->dpkg__sub_archive->ah_flags |= ARCHIVE_UNLINK_OLD; |
1565 |
unpack_ar_archive(archive_handle); |
unpack_ar_archive(archive_handle); |
1566 |
|
|
1567 |
/* Create the list file */ |
/* Create the list file */ |
1568 |
list_filename = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "list"); |
list_filename = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "list"); |
1569 |
out_stream = xfopen_for_write(list_filename); |
out_stream = xfopen_for_write(list_filename); |
1570 |
while (archive_handle->sub_archive->passed) { |
while (archive_handle->dpkg__sub_archive->passed) { |
1571 |
/* the leading . has been stripped by data_extract_all_prefix already */ |
/* the leading . has been stripped by data_extract_all_prefix already */ |
1572 |
fputs(archive_handle->sub_archive->passed->data, out_stream); |
fputs(archive_handle->dpkg__sub_archive->passed->data, out_stream); |
1573 |
fputc('\n', out_stream); |
fputc('\n', out_stream); |
1574 |
archive_handle->sub_archive->passed = archive_handle->sub_archive->passed->link; |
archive_handle->dpkg__sub_archive->passed = archive_handle->dpkg__sub_archive->passed->link; |
1575 |
} |
} |
1576 |
fclose(out_stream); |
fclose(out_stream); |
1577 |
|
|
1665 |
init_archive_deb_control(archive_handle); |
init_archive_deb_control(archive_handle); |
1666 |
deb_file[deb_count]->control_file = deb_extract_control_file_to_buffer(archive_handle, control_list); |
deb_file[deb_count]->control_file = deb_extract_control_file_to_buffer(archive_handle, control_list); |
1667 |
if (deb_file[deb_count]->control_file == NULL) { |
if (deb_file[deb_count]->control_file == NULL) { |
1668 |
bb_error_msg_and_die("cannot extract control file"); |
bb_error_msg_and_die("can't extract control file"); |
1669 |
} |
} |
1670 |
deb_file[deb_count]->filename = xstrdup(argv[0]); |
deb_file[deb_count]->filename = xstrdup(argv[0]); |
1671 |
package_num = fill_package_struct(deb_file[deb_count]->control_file); |
package_num = fill_package_struct(deb_file[deb_count]->control_file); |