[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/archival/dpkg.c b/ap/app/busybox/src/archival/dpkg.c
new file mode 100644
index 0000000..ed86f33
--- /dev/null
+++ b/ap/app/busybox/src/archival/dpkg.c
@@ -0,0 +1,1925 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * mini dpkg implementation for busybox.
+ * this is not meant as a replacement for dpkg
+ *
+ * written by glenn mcgrath with the help of others
+ * copyright (c) 2001 by glenn mcgrath
+ *
+ * parts of the version comparison code is plucked from the real dpkg
+ * application which is licensed GPLv2 and
+ * copyright (c) 1995 Ian Jackson <ian@chiark.greenend.org.uk>
+ *
+ * started life as a busybox implementation of udpkg
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+
+/*
+ * known difference between busybox dpkg and the official dpkg that i don't
+ * consider important, its worth keeping a note of differences anyway, just to
+ * make it easier to maintain.
+ * - the first value for the confflile: field isnt placed on a new line.
+ * - when installing a package the status: field is placed at the end of the
+ * section, rather than just after the package: field.
+ *
+ * bugs that need to be fixed
+ * - (unknown, please let me know when you find any)
+ *
+ */
+
+//usage:#define dpkg_trivial_usage
+//usage: "[-ilCPru] [-F OPT] PACKAGE"
+//usage:#define dpkg_full_usage "\n\n"
+//usage: "Install, remove and manage Debian packages\n"
+//usage: IF_LONG_OPTS(
+//usage: "\n -i,--install Install the package"
+//usage: "\n -l,--list List of installed packages"
+//usage: "\n --configure Configure an unpackaged package"
+//usage: "\n -P,--purge Purge all files of a package"
+//usage: "\n -r,--remove Remove all but the configuration files for a package"
+//usage: "\n --unpack Unpack a package, but don't configure it"
+//usage: "\n --force-depends Ignore dependency problems"
+//usage: "\n --force-confnew Overwrite existing config files when installing"
+//usage: "\n --force-confold Keep old config files when installing"
+//usage: )
+//usage: IF_NOT_LONG_OPTS(
+//usage: "\n -i Install the package"
+//usage: "\n -l List of installed packages"
+//usage: "\n -C Configure an unpackaged package"
+//usage: "\n -P Purge all files of a package"
+//usage: "\n -r Remove all but the configuration files for a package"
+//usage: "\n -u Unpack a package, but don't configure it"
+//usage: "\n -F depends Ignore dependency problems"
+//usage: "\n -F confnew Overwrite existing config files when installing"
+//usage: "\n -F confold Keep old config files when installing"
+//usage: )
+
+#include "libbb.h"
+#include <fnmatch.h>
+#include "bb_archive.h"
+
+/* note: if you vary hash_prime sizes be aware,
+ * 1) tweaking these will have a big effect on how much memory this program uses.
+ * 2) for computational efficiency these hash tables should be at least 20%
+ * larger than the maximum number of elements stored in it.
+ * 3) all _hash_prime's must be a prime number or chaos is assured, if your looking
+ * for a prime, try http://www.utm.edu/research/primes/lists/small/10000.txt
+ * 4) if you go bigger than 15 bits you may get into trouble (untested) as its
+ * sometimes cast to an unsigned, if you go to 16 bit you will overlap
+ * int's and chaos is assured, 16381 is the max prime for 14 bit field
+ */
+
+/* NAME_HASH_PRIME, Stores package names and versions,
+ * I estimate it should be at least 50% bigger than PACKAGE_HASH_PRIME,
+ * as there a lot of duplicate version numbers */
+#define NAME_HASH_PRIME 16381
+
+/* PACKAGE_HASH_PRIME, Maximum number of unique packages,
+ * It must not be smaller than STATUS_HASH_PRIME,
+ * Currently only packages from status_hashtable are stored in here, but in
+ * future this may be used to store packages not only from a status file,
+ * but an available_hashtable, and even multiple packages files.
+ * Package can be stored more than once if they have different versions.
+ * e.g. The same package may have different versions in the status file
+ * and available file */
+#define PACKAGE_HASH_PRIME 10007
+typedef struct edge_s {
+ unsigned operator:4; /* was:3 */
+ unsigned type:4;
+ unsigned name:16; /* was:14 */
+ unsigned version:16; /* was:14 */
+} edge_t;
+
+typedef struct common_node_s {
+ unsigned name:16; /* was:14 */
+ unsigned version:16; /* was:14 */
+ unsigned num_of_edges:16; /* was:14 */
+ edge_t **edge;
+} common_node_t;
+
+/* Currently it doesnt store packages that have state-status of not-installed
+ * So it only really has to be the size of the maximum number of packages
+ * likely to be installed at any one time, so there is a bit of leeway here */
+#define STATUS_HASH_PRIME 8191
+typedef struct status_node_s {
+ unsigned package:16; /* was:14 */ /* has to fit PACKAGE_HASH_PRIME */
+ unsigned status:16; /* was:14 */ /* has to fit STATUS_HASH_PRIME */
+} status_node_t;
+
+
+/* Globals */
+struct globals {
+ char *name_hashtable[NAME_HASH_PRIME + 1];
+ common_node_t *package_hashtable[PACKAGE_HASH_PRIME + 1];
+ status_node_t *status_hashtable[STATUS_HASH_PRIME + 1];
+};
+#define G (*ptr_to_globals)
+#define name_hashtable (G.name_hashtable )
+#define package_hashtable (G.package_hashtable)
+#define status_hashtable (G.status_hashtable )
+#define INIT_G() do { \
+ SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
+} while (0)
+
+
+/* Even numbers are for 'extras', like ored dependencies or null */
+enum edge_type_e {
+ EDGE_NULL = 0,
+ EDGE_PRE_DEPENDS = 1,
+ EDGE_OR_PRE_DEPENDS = 2,
+ EDGE_DEPENDS = 3,
+ EDGE_OR_DEPENDS = 4,
+ EDGE_REPLACES = 5,
+ EDGE_PROVIDES = 7,
+ EDGE_CONFLICTS = 9,
+ EDGE_SUGGESTS = 11,
+ EDGE_RECOMMENDS = 13,
+ EDGE_ENHANCES = 15
+};
+enum operator_e {
+ VER_NULL = 0,
+ VER_EQUAL = 1,
+ VER_LESS = 2,
+ VER_LESS_EQUAL = 3,
+ VER_MORE = 4,
+ VER_MORE_EQUAL = 5,
+ VER_ANY = 6
+};
+
+typedef struct deb_file_s {
+ char *control_file;
+ char *filename;
+ unsigned package:16; /* was:14 */
+} deb_file_t;
+
+
+static void make_hash(const char *key, unsigned *start, unsigned *decrement, const int hash_prime)
+{
+ unsigned long hash_num = key[0];
+ int len = strlen(key);
+ int i;
+
+ /* Maybe i should have uses a "proper" hashing algorithm here instead
+ * of making one up myself, seems to be working ok though. */
+ for (i = 1; i < len; i++) {
+ /* shifts the ascii based value and adds it to previous value
+ * shift amount is mod 24 because long int is 32 bit and data
+ * to be shifted is 8, don't want to shift data to where it has
+ * no effect */
+ hash_num += (key[i] + key[i-1]) << ((key[i] * i) % 24);
+ }
+ *start = (unsigned) hash_num % hash_prime;
+ *decrement = (unsigned) 1 + (hash_num % (hash_prime - 1));
+}
+
+/* this adds the key to the hash table */
+static int search_name_hashtable(const char *key)
+{
+ unsigned probe_address;
+ unsigned probe_decrement;
+
+ make_hash(key, &probe_address, &probe_decrement, NAME_HASH_PRIME);
+ while (name_hashtable[probe_address] != NULL) {
+ if (strcmp(name_hashtable[probe_address], key) == 0) {
+ return probe_address;
+ }
+ probe_address -= probe_decrement;
+ if ((int)probe_address < 0) {
+ probe_address += NAME_HASH_PRIME;
+ }
+ }
+ name_hashtable[probe_address] = xstrdup(key);
+ return probe_address;
+}
+
+/* this DOESNT add the key to the hashtable
+ * TODO make it consistent with search_name_hashtable
+ */
+static unsigned search_status_hashtable(const char *key)
+{
+ unsigned probe_address;
+ unsigned probe_decrement;
+
+ make_hash(key, &probe_address, &probe_decrement, STATUS_HASH_PRIME);
+ while (status_hashtable[probe_address] != NULL) {
+ if (strcmp(key, name_hashtable[package_hashtable[status_hashtable[probe_address]->package]->name]) == 0) {
+ break;
+ }
+ probe_address -= probe_decrement;
+ if ((int)probe_address < 0) {
+ probe_address += STATUS_HASH_PRIME;
+ }
+ }
+ return probe_address;
+}
+
+static int order(char x)
+{
+ return (x == '~' ? -1
+ : x == '\0' ? 0
+ : isdigit(x) ? 0
+ : isalpha(x) ? x
+ : (unsigned char)x + 256
+ );
+}
+
+/* This code is taken from dpkg and modified slightly to work with busybox */
+static int version_compare_part(const char *val, const char *ref)
+{
+ if (!val) val = "";
+ if (!ref) ref = "";
+
+ while (*val || *ref) {
+ int first_diff;
+
+ while ((*val && !isdigit(*val)) || (*ref && !isdigit(*ref))) {
+ int vc = order(*val);
+ int rc = order(*ref);
+ if (vc != rc)
+ return vc - rc;
+ val++;
+ ref++;
+ }
+
+ while (*val == '0')
+ val++;
+ while (*ref == '0')
+ ref++;
+
+ first_diff = 0;
+ while (isdigit(*val) && isdigit(*ref)) {
+ if (first_diff == 0)
+ first_diff = *val - *ref;
+ val++;
+ ref++;
+ }
+ if (isdigit(*val))
+ return 1;
+ if (isdigit(*ref))
+ return -1;
+ if (first_diff)
+ return first_diff;
+ }
+ return 0;
+}
+
+/* if ver1 < ver2 return -1,
+ * if ver1 = ver2 return 0,
+ * if ver1 > ver2 return 1,
+ */
+static int version_compare(const unsigned ver1, const unsigned ver2)
+{
+ char *ch_ver1 = name_hashtable[ver1];
+ char *ch_ver2 = name_hashtable[ver2];
+ unsigned epoch1 = 0, epoch2 = 0;
+ char *colon;
+ char *deb_ver1, *deb_ver2;
+ char *upstream_ver1;
+ char *upstream_ver2;
+ int result;
+
+ /* Compare epoch */
+ colon = strchr(ch_ver1, ':');
+ if (colon) {
+ epoch1 = atoi(ch_ver1);
+ ch_ver1 = colon + 1;
+ }
+ colon = strchr(ch_ver2, ':');
+ if (colon) {
+ epoch2 = atoi(ch_ver2);
+ ch_ver2 = colon + 1;
+ }
+ if (epoch1 < epoch2) {
+ return -1;
+ }
+ if (epoch1 > epoch2) {
+ return 1;
+ }
+
+ /* Compare upstream version */
+ upstream_ver1 = xstrdup(ch_ver1);
+ upstream_ver2 = xstrdup(ch_ver2);
+
+ /* Chop off debian version, and store for later use */
+ deb_ver1 = strrchr(upstream_ver1, '-');
+ deb_ver2 = strrchr(upstream_ver2, '-');
+ if (deb_ver1) {
+ *deb_ver1++ = '\0';
+ }
+ if (deb_ver2) {
+ *deb_ver2++ = '\0';
+ }
+ result = version_compare_part(upstream_ver1, upstream_ver2);
+ if (result == 0) {
+ /* Compare debian versions */
+ result = version_compare_part(deb_ver1, deb_ver2);
+ }
+
+ free(upstream_ver1);
+ free(upstream_ver2);
+ return result;
+}
+
+static int test_version(const unsigned version1, const unsigned version2, const unsigned operator)
+{
+ const int version_result = version_compare(version1, version2);
+ switch (operator) {
+ case VER_ANY:
+ return TRUE;
+ case VER_EQUAL:
+ return (version_result == 0);
+ case VER_LESS:
+ return (version_result < 0);
+ case VER_LESS_EQUAL:
+ return (version_result <= 0);
+ case VER_MORE:
+ return (version_result > 0);
+ case VER_MORE_EQUAL:
+ return (version_result >= 0);
+ }
+ return FALSE;
+}
+
+static int search_package_hashtable(const unsigned name, const unsigned version, const unsigned operator)
+{
+ unsigned probe_address;
+ unsigned probe_decrement;
+
+ make_hash(name_hashtable[name], &probe_address, &probe_decrement, PACKAGE_HASH_PRIME);
+ while (package_hashtable[probe_address] != NULL) {
+ if (package_hashtable[probe_address]->name == name) {
+ if (operator == VER_ANY) {
+ return probe_address;
+ }
+ if (test_version(package_hashtable[probe_address]->version, version, operator)) {
+ return probe_address;
+ }
+ }
+ probe_address -= probe_decrement;
+ if ((int)probe_address < 0) {
+ probe_address += PACKAGE_HASH_PRIME;
+ }
+ }
+ return probe_address;
+}
+
+/*
+ * This function searches through the entire package_hashtable looking
+ * for a package which provides "needle". It returns the index into
+ * the package_hashtable for the providing package.
+ *
+ * needle is the index into name_hashtable of the package we are
+ * looking for.
+ *
+ * start_at is the index in the package_hashtable to start looking
+ * at. If start_at is -1 then start at the beginning. This is to allow
+ * for repeated searches since more than one package might provide
+ * needle.
+ *
+ * FIXME: I don't think this is very efficient, but I thought I'd keep
+ * it simple for now until it proves to be a problem.
+ */
+static int search_for_provides(int needle, int start_at)
+{
+ int i, j;
+ common_node_t *p;
+ for (i = start_at + 1; i < PACKAGE_HASH_PRIME; i++) {
+ p = package_hashtable[i];
+ if (p == NULL)
+ continue;
+ for (j = 0; j < p->num_of_edges; j++)
+ if (p->edge[j]->type == EDGE_PROVIDES && p->edge[j]->name == needle)
+ return i;
+ }
+ return -1;
+}
+
+/*
+ * Add an edge to a node
+ */
+static void add_edge_to_node(common_node_t *node, edge_t *edge)
+{
+ node->edge = xrealloc_vector(node->edge, 2, node->num_of_edges);
+ node->edge[node->num_of_edges++] = edge;
+}
+
+/*
+ * Create one new node and one new edge for every dependency.
+ *
+ * Dependencies which contain multiple alternatives are represented as
+ * an EDGE_OR_PRE_DEPENDS or EDGE_OR_DEPENDS node, followed by a
+ * number of EDGE_PRE_DEPENDS or EDGE_DEPENDS nodes. The name field of
+ * the OR edge contains the full dependency string while the version
+ * field contains the number of EDGE nodes which follow as part of
+ * this alternative.
+ */
+static void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned edge_type)
+{
+ char *line = xstrdup(whole_line);
+ char *line2;
+ char *line_ptr1 = NULL;
+ char *line_ptr2 = NULL;
+ char *field;
+ char *field2;
+ char *version;
+ edge_t *edge;
+ edge_t *or_edge;
+ int offset_ch;
+
+ field = strtok_r(line, ",", &line_ptr1);
+ do {
+ /* skip leading spaces */
+ field += strspn(field, " ");
+ line2 = xstrdup(field);
+ field2 = strtok_r(line2, "|", &line_ptr2);
+ or_edge = NULL;
+ if ((edge_type == EDGE_DEPENDS || edge_type == EDGE_PRE_DEPENDS)
+ && (strcmp(field, field2) != 0)
+ ) {
+ or_edge = xzalloc(sizeof(edge_t));
+ or_edge->type = edge_type + 1;
+ or_edge->name = search_name_hashtable(field);
+ //or_edge->version = 0; // tracks the number of alternatives
+ add_edge_to_node(parent_node, or_edge);
+ }
+
+ do {
+ edge = xmalloc(sizeof(edge_t));
+ edge->type = edge_type;
+
+ /* Skip any extra leading spaces */
+ field2 += strspn(field2, " ");
+
+ /* Get dependency version info */
+ version = strchr(field2, '(');
+ if (version == NULL) {
+ edge->operator = VER_ANY;
+ /* Get the versions hash number, adding it if the number isnt already in there */
+ edge->version = search_name_hashtable("ANY");
+ } else {
+ /* Skip leading ' ' or '(' */
+ version += strspn(version, " (");
+ /* Calculate length of any operator characters */
+ offset_ch = strspn(version, "<=>");
+ /* Determine operator */
+ if (offset_ch > 0) {
+ if (strncmp(version, "=", offset_ch) == 0) {
+ edge->operator = VER_EQUAL;
+ } else if (strncmp(version, "<<", offset_ch) == 0) {
+ edge->operator = VER_LESS;
+ } else if (strncmp(version, "<=", offset_ch) == 0) {
+ edge->operator = VER_LESS_EQUAL;
+ } else if (strncmp(version, ">>", offset_ch) == 0) {
+ edge->operator = VER_MORE;
+ } else if (strncmp(version, ">=", offset_ch) == 0) {
+ edge->operator = VER_MORE_EQUAL;
+ } else {
+ bb_error_msg_and_die("illegal operator");
+ }
+ }
+ /* skip to start of version numbers */
+ version += offset_ch;
+ version += strspn(version, " ");
+
+ /* Truncate version at trailing ' ' or ')' */
+ version[strcspn(version, " )")] = '\0';
+ /* Get the versions hash number, adding it if the number isnt already in there */
+ edge->version = search_name_hashtable(version);
+ }
+
+ /* Get the dependency name */
+ field2[strcspn(field2, " (")] = '\0';
+ edge->name = search_name_hashtable(field2);
+
+ if (or_edge)
+ or_edge->version++;
+
+ add_edge_to_node(parent_node, edge);
+ field2 = strtok_r(NULL, "|", &line_ptr2);
+ } while (field2 != NULL);
+
+ free(line2);
+ field = strtok_r(NULL, ",", &line_ptr1);
+ } while (field != NULL);
+
+ free(line);
+}
+
+static void free_package(common_node_t *node)
+{
+ unsigned i;
+ if (node) {
+ for (i = 0; i < node->num_of_edges; i++) {
+ free(node->edge[i]);
+ }
+ free(node->edge);
+ free(node);
+ }
+}
+
+/*
+ * Gets the next package field from package_buffer, separated into the field name
+ * and field value, it returns the int offset to the first character of the next field
+ */
+static int read_package_field(const char *package_buffer, char **field_name, char **field_value)
+{
+ int offset_name_start = 0;
+ int offset_name_end = 0;
+ int offset_value_start = 0;
+ int offset_value_end = 0;
+ int offset = 0;
+ int next_offset;
+ int name_length;
+ int value_length;
+ int exit_flag = FALSE;
+
+ if (package_buffer == NULL) {
+ *field_name = NULL;
+ *field_value = NULL;
+ return -1;
+ }
+ while (1) {
+ next_offset = offset + 1;
+ switch (package_buffer[offset]) {
+ case '\0':
+ exit_flag = TRUE;
+ break;
+ case ':':
+ if (offset_name_end == 0) {
+ offset_name_end = offset;
+ offset_value_start = next_offset;
+ }
+ /* TODO: Name might still have trailing spaces if ':' isnt
+ * immediately after name */
+ break;
+ case '\n':
+ /* TODO: The char next_offset may be out of bounds */
+ if (package_buffer[next_offset] != ' ') {
+ exit_flag = TRUE;
+ break;
+ }
+ case '\t':
+ case ' ':
+ /* increment the value start point if its a just filler */
+ if (offset_name_start == offset) {
+ offset_name_start++;
+ }
+ if (offset_value_start == offset) {
+ offset_value_start++;
+ }
+ break;
+ }
+ if (exit_flag) {
+ /* Check that the names are valid */
+ offset_value_end = offset;
+ name_length = offset_name_end - offset_name_start;
+ value_length = offset_value_end - offset_value_start;
+ if (name_length == 0) {
+ break;
+ }
+ if ((name_length > 0) && (value_length > 0)) {
+ break;
+ }
+
+ /* If not valid, start fresh with next field */
+ exit_flag = FALSE;
+ offset_name_start = offset + 1;
+ offset_name_end = 0;
+ offset_value_start = offset + 1;
+ offset_value_end = offset + 1;
+ offset++;
+ }
+ offset++;
+ }
+ *field_name = NULL;
+ if (name_length) {
+ *field_name = xstrndup(&package_buffer[offset_name_start], name_length);
+ }
+ *field_value = NULL;
+ if (value_length > 0) {
+ *field_value = xstrndup(&package_buffer[offset_value_start], value_length);
+ }
+ return next_offset;
+}
+
+static unsigned fill_package_struct(char *control_buffer)
+{
+ static const char field_names[] ALIGN1 =
+ "Package\0""Version\0"
+ "Pre-Depends\0""Depends\0""Replaces\0""Provides\0"
+ "Conflicts\0""Suggests\0""Recommends\0""Enhances\0";
+
+ common_node_t *new_node = xzalloc(sizeof(common_node_t));
+ char *field_name;
+ char *field_value;
+ int field_start = 0;
+ int num = -1;
+ int buffer_length = strlen(control_buffer);
+
+ new_node->version = search_name_hashtable("unknown");
+ while (field_start < buffer_length) {
+ unsigned field_num;
+
+ field_start += read_package_field(&control_buffer[field_start],
+ &field_name, &field_value);
+
+ if (field_name == NULL) {
+ goto fill_package_struct_cleanup;
+ }
+
+ field_num = index_in_strings(field_names, field_name);
+ switch (field_num) {
+ case 0: /* Package */
+ new_node->name = search_name_hashtable(field_value);
+ break;
+ case 1: /* Version */
+ new_node->version = search_name_hashtable(field_value);
+ break;
+ case 2: /* Pre-Depends */
+ add_split_dependencies(new_node, field_value, EDGE_PRE_DEPENDS);
+ break;
+ case 3: /* Depends */
+ add_split_dependencies(new_node, field_value, EDGE_DEPENDS);
+ break;
+ case 4: /* Replaces */
+ add_split_dependencies(new_node, field_value, EDGE_REPLACES);
+ break;
+ case 5: /* Provides */
+ add_split_dependencies(new_node, field_value, EDGE_PROVIDES);
+ break;
+ case 6: /* Conflicts */
+ add_split_dependencies(new_node, field_value, EDGE_CONFLICTS);
+ break;
+ case 7: /* Suggests */
+ add_split_dependencies(new_node, field_value, EDGE_SUGGESTS);
+ break;
+ case 8: /* Recommends */
+ add_split_dependencies(new_node, field_value, EDGE_RECOMMENDS);
+ break;
+ case 9: /* Enhances */
+ add_split_dependencies(new_node, field_value, EDGE_ENHANCES);
+ break;
+ }
+ fill_package_struct_cleanup:
+ free(field_name);
+ free(field_value);
+ }
+
+ if (new_node->version == search_name_hashtable("unknown")) {
+ free_package(new_node);
+ return -1;
+ }
+ num = search_package_hashtable(new_node->name, new_node->version, VER_EQUAL);
+ free_package(package_hashtable[num]);
+ package_hashtable[num] = new_node;
+ return num;
+}
+
+/* if num = 1, it returns the want status, 2 returns flag, 3 returns status */
+static unsigned get_status(const unsigned status_node, const int num)
+{
+ char *status_string = name_hashtable[status_hashtable[status_node]->status];
+ char *state_sub_string;
+ unsigned state_sub_num;
+ int len;
+ int i;
+
+ /* set tmp_string to point to the start of the word number */
+ for (i = 1; i < num; i++) {
+ /* skip past a word */
+ status_string += strcspn(status_string, " ");
+ /* skip past the separating spaces */
+ status_string += strspn(status_string, " ");
+ }
+ len = strcspn(status_string, " \n");
+ state_sub_string = xstrndup(status_string, len);
+ state_sub_num = search_name_hashtable(state_sub_string);
+ free(state_sub_string);
+ return state_sub_num;
+}
+
+static void set_status(const unsigned status_node_num, const char *new_value, const int position)
+{
+ const unsigned new_value_num = search_name_hashtable(new_value);
+ unsigned want = get_status(status_node_num, 1);
+ unsigned flag = get_status(status_node_num, 2);
+ unsigned status = get_status(status_node_num, 3);
+ char *new_status;
+
+ switch (position) {
+ case 1:
+ want = new_value_num;
+ break;
+ case 2:
+ flag = new_value_num;
+ break;
+ case 3:
+ status = new_value_num;
+ break;
+ default:
+ bb_error_msg_and_die("DEBUG ONLY: this shouldnt happen");
+ }
+
+ new_status = xasprintf("%s %s %s", name_hashtable[want], name_hashtable[flag], name_hashtable[status]);
+ status_hashtable[status_node_num]->status = search_name_hashtable(new_status);
+ free(new_status);
+}
+
+static const char *describe_status(int status_num)
+{
+ int status_want, status_state;
+ if (status_hashtable[status_num] == NULL || status_hashtable[status_num]->status == 0)
+ return "is not installed or flagged to be installed";
+
+ status_want = get_status(status_num, 1);
+ status_state = get_status(status_num, 3);
+
+ if (status_state == search_name_hashtable("installed")) {
+ if (status_want == search_name_hashtable("install"))
+ return "is installed";
+ if (status_want == search_name_hashtable("deinstall"))
+ return "is marked to be removed";
+ if (status_want == search_name_hashtable("purge"))
+ return "is marked to be purged";
+ }
+ if (status_want == search_name_hashtable("unknown"))
+ return "is in an indeterminate state";
+ if (status_want == search_name_hashtable("install"))
+ return "is marked to be installed";
+
+ return "is not installed or flagged to be installed";
+}
+
+static void index_status_file(const char *filename)
+{
+ FILE *status_file;
+ char *control_buffer;
+ char *status_line;
+ status_node_t *status_node = NULL;
+ unsigned status_num;
+
+ status_file = xfopen_for_read(filename);
+ while ((control_buffer = xmalloc_fgetline_str(status_file, "\n\n")) != NULL) {
+ const unsigned package_num = fill_package_struct(control_buffer);
+ if (package_num != -1) {
+ status_node = xmalloc(sizeof(status_node_t));
+ /* fill_package_struct doesnt handle the status field */
+ status_line = strstr(control_buffer, "Status:");
+ if (status_line != NULL) {
+ status_line += 7;
+ status_line += strspn(status_line, " \n\t");
+ status_line = xstrndup(status_line, strcspn(status_line, "\n"));
+ status_node->status = search_name_hashtable(status_line);
+ free(status_line);
+ }
+ status_node->package = package_num;
+ status_num = search_status_hashtable(name_hashtable[package_hashtable[status_node->package]->name]);
+ status_hashtable[status_num] = status_node;
+ }
+ free(control_buffer);
+ }
+ fclose(status_file);
+}
+
+static void write_buffer_no_status(FILE *new_status_file, const char *control_buffer)
+{
+ char *name;
+ char *value;
+ int start = 0;
+ while (1) {
+ start += read_package_field(&control_buffer[start], &name, &value);
+ if (name == NULL) {
+ break;
+ }
+ if (strcmp(name, "Status") != 0) {
+ fprintf(new_status_file, "%s: %s\n", name, value);
+ }
+ }
+}
+
+/* This could do with a cleanup */
+static void write_status_file(deb_file_t **deb_file)
+{
+ FILE *old_status_file = xfopen_for_read("/var/lib/dpkg/status");
+ FILE *new_status_file = xfopen_for_write("/var/lib/dpkg/status.udeb");
+ char *package_name;
+ char *status_from_file;
+ char *control_buffer = NULL;
+ char *tmp_string;
+ int status_num;
+ int field_start = 0;
+ int write_flag;
+ int i = 0;
+
+ /* Update previously known packages */
+ while ((control_buffer = xmalloc_fgetline_str(old_status_file, "\n\n")) != NULL) {
+ tmp_string = strstr(control_buffer, "Package:");
+ if (tmp_string == NULL) {
+ continue;
+ }
+
+ tmp_string += 8;
+ tmp_string += strspn(tmp_string, " \n\t");
+ package_name = xstrndup(tmp_string, strcspn(tmp_string, "\n"));
+ write_flag = FALSE;
+ tmp_string = strstr(control_buffer, "Status:");
+ if (tmp_string != NULL) {
+ /* Separate the status value from the control buffer */
+ tmp_string += 7;
+ tmp_string += strspn(tmp_string, " \n\t");
+ status_from_file = xstrndup(tmp_string, strcspn(tmp_string, "\n"));
+ } else {
+ status_from_file = NULL;
+ }
+
+ /* Find this package in the status hashtable */
+ status_num = search_status_hashtable(package_name);
+ if (status_hashtable[status_num] != NULL) {
+ const char *status_from_hashtable = name_hashtable[status_hashtable[status_num]->status];
+ if (strcmp(status_from_file, status_from_hashtable) != 0) {
+ /* New status isnt exactly the same as old status */
+ const int state_status = get_status(status_num, 3);
+ if ((strcmp("installed", name_hashtable[state_status]) == 0)
+ || (strcmp("unpacked", name_hashtable[state_status]) == 0)
+ ) {
+ /* We need to add the control file from the package */
+ i = 0;
+ while (deb_file[i] != NULL) {
+ if (strcmp(package_name, name_hashtable[package_hashtable[deb_file[i]->package]->name]) == 0) {
+ /* Write a status file entry with a modified status */
+ /* remove trailing \n's */
+ write_buffer_no_status(new_status_file, deb_file[i]->control_file);
+ set_status(status_num, "ok", 2);
+ fprintf(new_status_file, "Status: %s\n\n",
+ name_hashtable[status_hashtable[status_num]->status]);
+ write_flag = TRUE;
+ break;
+ }
+ i++;
+ }
+ /* This is temperary, debugging only */
+ if (deb_file[i] == NULL) {
+ bb_error_msg_and_die("ALERT: cannot find a control file, "
+ "your status file may be broken, status may be "
+ "incorrect for %s", package_name);
+ }
+ }
+ else if (strcmp("not-installed", name_hashtable[state_status]) == 0) {
+ /* Only write the Package, Status, Priority and Section lines */
+ fprintf(new_status_file, "Package: %s\n", package_name);
+ fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
+
+ while (1) {
+ char *field_name;
+ char *field_value;
+ field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value);
+ if (field_name == NULL) {
+ break;
+ }
+ if ((strcmp(field_name, "Priority") == 0)
+ || (strcmp(field_name, "Section") == 0)
+ ) {
+ fprintf(new_status_file, "%s: %s\n", field_name, field_value);
+ }
+ }
+ write_flag = TRUE;
+ fputs("\n", new_status_file);
+ }
+ else if (strcmp("config-files", name_hashtable[state_status]) == 0) {
+ /* only change the status line */
+ while (1) {
+ char *field_name;
+ char *field_value;
+ field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value);
+ if (field_name == NULL) {
+ break;
+ }
+ /* Setup start point for next field */
+ if (strcmp(field_name, "Status") == 0) {
+ fprintf(new_status_file, "Status: %s\n", status_from_hashtable);
+ } else {
+ fprintf(new_status_file, "%s: %s\n", field_name, field_value);
+ }
+ }
+ write_flag = TRUE;
+ fputs("\n", new_status_file);
+ }
+ }
+ }
+ /* If the package from the status file wasnt handle above, do it now*/
+ if (!write_flag) {
+ fprintf(new_status_file, "%s\n\n", control_buffer);
+ }
+
+ free(status_from_file);
+ free(package_name);
+ free(control_buffer);
+ }
+
+ /* Write any new packages */
+ for (i = 0; deb_file[i] != NULL; i++) {
+ status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[i]->package]->name]);
+ if (strcmp("reinstreq", name_hashtable[get_status(status_num, 2)]) == 0) {
+ write_buffer_no_status(new_status_file, deb_file[i]->control_file);
+ set_status(status_num, "ok", 2);
+ fprintf(new_status_file, "Status: %s\n\n", name_hashtable[status_hashtable[status_num]->status]);
+ }
+ }
+ fclose(old_status_file);
+ fclose(new_status_file);
+
+ /* Create a separate backfile to dpkg */
+ if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) {
+ if (errno != ENOENT)
+ bb_error_msg_and_die("can't create backup status file");
+ /* Its ok if renaming the status file fails because status
+ * file doesnt exist, maybe we are starting from scratch */
+ bb_error_msg("no status file found, creating new one");
+ }
+
+ xrename("/var/lib/dpkg/status.udeb", "/var/lib/dpkg/status");
+}
+
+/* This function returns TRUE if the given package can satisfy a
+ * dependency of type depend_type.
+ *
+ * A pre-depends is satisfied only if a package is already installed,
+ * which a regular depends can be satisfied by a package which we want
+ * to install.
+ */
+static int package_satisfies_dependency(int package, int depend_type)
+{
+ int status_num = search_status_hashtable(name_hashtable[package_hashtable[package]->name]);
+
+ /* status could be unknown if package is a pure virtual
+ * provides which cannot satisfy any dependency by itself.
+ */
+ if (status_hashtable[status_num] == NULL)
+ return 0;
+
+ switch (depend_type) {
+ case EDGE_PRE_DEPENDS: return get_status(status_num, 3) == search_name_hashtable("installed");
+ case EDGE_DEPENDS: return get_status(status_num, 1) == search_name_hashtable("install");
+ }
+ return 0;
+}
+
+static int check_deps(deb_file_t **deb_file, int deb_start /*, int dep_max_count - ?? */)
+{
+ int *conflicts = NULL;
+ int conflicts_num = 0;
+ int i = deb_start;
+ int j;
+
+ /* Check for conflicts
+ * TODO: TEST if conflicts with other packages to be installed
+ *
+ * Add install packages and the packages they provide
+ * to the list of files to check conflicts for
+ */
+
+ /* Create array of package numbers to check against
+ * installed package for conflicts*/
+ while (deb_file[i] != NULL) {
+ const unsigned package_num = deb_file[i]->package;
+ conflicts = xrealloc_vector(conflicts, 2, conflicts_num);
+ conflicts[conflicts_num] = package_num;
+ conflicts_num++;
+ /* add provides to conflicts list */
+ for (j = 0; j < package_hashtable[package_num]->num_of_edges; j++) {
+ if (package_hashtable[package_num]->edge[j]->type == EDGE_PROVIDES) {
+ const int conflicts_package_num = search_package_hashtable(
+ package_hashtable[package_num]->edge[j]->name,
+ package_hashtable[package_num]->edge[j]->version,
+ package_hashtable[package_num]->edge[j]->operator);
+ if (package_hashtable[conflicts_package_num] == NULL) {
+ /* create a new package */
+ common_node_t *new_node = xzalloc(sizeof(common_node_t));
+ new_node->name = package_hashtable[package_num]->edge[j]->name;
+ new_node->version = package_hashtable[package_num]->edge[j]->version;
+ package_hashtable[conflicts_package_num] = new_node;
+ }
+ conflicts = xrealloc_vector(conflicts, 2, conflicts_num);
+ conflicts[conflicts_num] = conflicts_package_num;
+ conflicts_num++;
+ }
+ }
+ i++;
+ }
+
+ /* Check conflicts */
+ i = 0;
+ while (deb_file[i] != NULL) {
+ const common_node_t *package_node = package_hashtable[deb_file[i]->package];
+ int status_num = 0;
+ status_num = search_status_hashtable(name_hashtable[package_node->name]);
+
+ if (get_status(status_num, 3) == search_name_hashtable("installed")) {
+ i++;
+ continue;
+ }
+
+ for (j = 0; j < package_node->num_of_edges; j++) {
+ const edge_t *package_edge = package_node->edge[j];
+
+ if (package_edge->type == EDGE_CONFLICTS) {
+ const unsigned package_num =
+ search_package_hashtable(package_edge->name,
+ package_edge->version,
+ package_edge->operator);
+ int result = 0;
+ if (package_hashtable[package_num] != NULL) {
+ status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
+
+ if (get_status(status_num, 1) == search_name_hashtable("install")) {
+ result = test_version(package_hashtable[deb_file[i]->package]->version,
+ package_edge->version, package_edge->operator);
+ }
+ }
+
+ if (result) {
+ bb_error_msg_and_die("package %s conflicts with %s",
+ name_hashtable[package_node->name],
+ name_hashtable[package_edge->name]);
+ }
+ }
+ }
+ i++;
+ }
+
+
+ /* Check dependendcies */
+ for (i = 0; i < PACKAGE_HASH_PRIME; i++) {
+ int status_num = 0;
+ int number_of_alternatives = 0;
+ const edge_t * root_of_alternatives = NULL;
+ const common_node_t *package_node = package_hashtable[i];
+
+ /* If the package node does not exist then this
+ * package is a virtual one. In which case there are
+ * no dependencies to check.
+ */
+ if (package_node == NULL) continue;
+
+ status_num = search_status_hashtable(name_hashtable[package_node->name]);
+
+ /* If there is no status then this package is a
+ * virtual one provided by something else. In which
+ * case there are no dependencies to check.
+ */
+ if (status_hashtable[status_num] == NULL) continue;
+
+ /* If we don't want this package installed then we may
+ * as well ignore it's dependencies.
+ */
+ if (get_status(status_num, 1) != search_name_hashtable("install")) {
+ continue;
+ }
+
+ /* This code is tested only for EDGE_DEPENDS, since I
+ * have no suitable pre-depends available. There is no
+ * reason that it shouldn't work though :-)
+ */
+ for (j = 0; j < package_node->num_of_edges; j++) {
+ const edge_t *package_edge = package_node->edge[j];
+ unsigned package_num;
+
+ if (package_edge->type == EDGE_OR_PRE_DEPENDS
+ || package_edge->type == EDGE_OR_DEPENDS
+ ) {
+ /* start an EDGE_OR_ list */
+ number_of_alternatives = package_edge->version;
+ root_of_alternatives = package_edge;
+ continue;
+ }
+ if (number_of_alternatives == 0) { /* not in the middle of an EDGE_OR_ list */
+ number_of_alternatives = 1;
+ root_of_alternatives = NULL;
+ }
+
+ package_num = search_package_hashtable(package_edge->name, package_edge->version, package_edge->operator);
+
+ if (package_edge->type == EDGE_PRE_DEPENDS
+ || package_edge->type == EDGE_DEPENDS
+ ) {
+ int result=1;
+ status_num = 0;
+
+ /* If we are inside an alternative then check
+ * this edge is the right type.
+ *
+ * EDGE_DEPENDS == OR_DEPENDS -1
+ * EDGE_PRE_DEPENDS == OR_PRE_DEPENDS -1
+ */
+ if (root_of_alternatives && package_edge->type != root_of_alternatives->type - 1)
+ bb_error_msg_and_die("fatal error, package dependencies corrupt: %d != %d - 1",
+ package_edge->type, root_of_alternatives->type);
+
+ if (package_hashtable[package_num] != NULL)
+ result = !package_satisfies_dependency(package_num, package_edge->type);
+
+ if (result) { /* check for other package which provide what we are looking for */
+ int provider = -1;
+
+ while ((provider = search_for_provides(package_edge->name, provider)) > -1) {
+ if (package_hashtable[provider] == NULL) {
+ puts("Have a provider but no package information for it");
+ continue;
+ }
+ result = !package_satisfies_dependency(provider, package_edge->type);
+
+ if (result == 0)
+ break;
+ }
+ }
+
+ /* It must be already installed, or to be installed */
+ number_of_alternatives--;
+ if (result && number_of_alternatives == 0) {
+ if (root_of_alternatives)
+ bb_error_msg_and_die(
+ "package %s %sdepends on %s, "
+ "which cannot be satisfied",
+ name_hashtable[package_node->name],
+ package_edge->type == EDGE_PRE_DEPENDS ? "pre-" : "",
+ name_hashtable[root_of_alternatives->name]);
+ bb_error_msg_and_die(
+ "package %s %sdepends on %s, which %s\n",
+ name_hashtable[package_node->name],
+ package_edge->type == EDGE_PRE_DEPENDS ? "pre-" : "",
+ name_hashtable[package_edge->name],
+ describe_status(status_num));
+ }
+ if (result == 0 && number_of_alternatives) {
+ /* we've found a package which
+ * satisfies the dependency,
+ * so skip over the rest of
+ * the alternatives.
+ */
+ j += number_of_alternatives;
+ number_of_alternatives = 0;
+ }
+ }
+ }
+ }
+ free(conflicts);
+ return TRUE;
+}
+
+static char **create_list(const char *filename)
+{
+ FILE *list_stream;
+ char **file_list;
+ char *line;
+ int count;
+
+ /* don't use [xw]fopen here, handle error ourself */
+ list_stream = fopen_for_read(filename);
+ if (list_stream == NULL) {
+ return NULL;
+ }
+
+ file_list = NULL;
+ count = 0;
+ while ((line = xmalloc_fgetline(list_stream)) != NULL) {
+ file_list = xrealloc_vector(file_list, 2, count);
+ file_list[count++] = line;
+ /*file_list[count] = NULL; - xrealloc_vector did it */
+ }
+ fclose(list_stream);
+
+ return file_list;
+}
+
+/* maybe i should try and hook this into remove_file.c somehow */
+static int remove_file_array(char **remove_names, char **exclude_names)
+{
+ struct stat path_stat;
+ int remove_flag = 1; /* not removed anything yet */
+ int i, j;
+
+ if (remove_names == NULL) {
+ return 0;
+ }
+ for (i = 0; remove_names[i] != NULL; i++) {
+ if (exclude_names != NULL) {
+ for (j = 0; exclude_names[j] != NULL; j++) {
+ if (strcmp(remove_names[i], exclude_names[j]) == 0) {
+ goto skip;
+ }
+ }
+ }
+ /* TODO: why we are checking lstat? we can just try rm/rmdir */
+ if (lstat(remove_names[i], &path_stat) < 0) {
+ continue;
+ }
+ if (S_ISDIR(path_stat.st_mode)) {
+ remove_flag &= rmdir(remove_names[i]); /* 0 if no error */
+ } else {
+ remove_flag &= unlink(remove_names[i]); /* 0 if no error */
+ }
+ skip:
+ continue;
+ }
+ return (remove_flag == 0);
+}
+
+static void run_package_script_or_die(const char *package_name, const char *script_type)
+{
+ char *script_path;
+ int result;
+
+ script_path = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, script_type);
+
+ /* If the file doesnt exist is isnt fatal */
+ result = access(script_path, F_OK) ? EXIT_SUCCESS : system(script_path);
+ free(script_path);
+ if (result)
+ bb_error_msg_and_die("%s failed, exit code %d", script_type, result);
+}
+
+/*
+The policy manual defines what scripts get called when and with
+what arguments. I realize that busybox does not support all of
+these scenarios, but it does support some of them; it does not,
+however, run them with any parameters in run_package_script_or_die().
+Here are the scripts:
+
+preinst install
+preinst install <old_version>
+preinst upgrade <old_version>
+preinst abort_upgrade <new_version>
+postinst configure <most_recent_version>
+postinst abort-upgade <new_version>
+postinst abort-remove
+postinst abort-remove in-favour <package> <version>
+postinst abort-deconfigure in-favor <failed_install_package> removing <conflicting_package> <version>
+prerm remove
+prerm upgrade <new_version>
+prerm failed-upgrade <old_version>
+prerm remove in-favor <package> <new_version>
+prerm deconfigure in-favour <package> <version> removing <package> <version>
+postrm remove
+postrm purge
+postrm upgrade <new_version>
+postrm failed-upgrade <old_version>
+postrm abort-install
+postrm abort-install <old_version>
+postrm abort-upgrade <old_version>
+postrm disappear <overwriter> <version>
+*/
+static const char *const all_control_files[] = {
+ "preinst", "postinst", "prerm", "postrm",
+ "list", "md5sums", "shlibs", "conffiles",
+ "config", "templates"
+};
+
+static char **all_control_list(const char *package_name)
+{
+ unsigned i = 0;
+ char **remove_files;
+
+ /* Create a list of all /var/lib/dpkg/info/<package> files */
+ remove_files = xzalloc(sizeof(all_control_files) + sizeof(char*));
+ while (i < ARRAY_SIZE(all_control_files)) {
+ remove_files[i] = xasprintf("/var/lib/dpkg/info/%s.%s",
+ package_name, all_control_files[i]);
+ i++;
+ }
+
+ return remove_files;
+}
+
+static void free_array(char **array)
+{
+ if (array) {
+ unsigned i = 0;
+ while (array[i]) {
+ free(array[i]);
+ i++;
+ }
+ free(array);
+ }
+}
+
+/* This function lists information on the installed packages. It loops through
+ * the status_hashtable to retrieve the info. This results in smaller code than
+ * scanning the status file. The resulting list, however, is unsorted.
+ */
+static void list_packages(const char *pattern)
+{
+ int i;
+
+ puts(" Name Version");
+ puts("+++-==============-==============");
+
+ /* go through status hash, dereference package hash and finally strings */
+ for (i = 0; i < STATUS_HASH_PRIME+1; i++) {
+ if (status_hashtable[i]) {
+ const char *stat_str; /* status string */
+ const char *name_str; /* package name */
+ const char *vers_str; /* version */
+ char s1, s2; /* status abbreviations */
+ int spccnt; /* space count */
+ int j;
+
+ stat_str = name_hashtable[status_hashtable[i]->status];
+ name_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->name];
+ vers_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->version];
+
+ if (pattern && fnmatch(pattern, name_str, 0) != 0)
+ continue;
+
+ /* get abbreviation for status field 1 */
+ s1 = stat_str[0] == 'i' ? 'i' : 'r';
+
+ /* get abbreviation for status field 2 */
+ for (j = 0, spccnt = 0; stat_str[j] && spccnt < 2; j++) {
+ if (stat_str[j] == ' ') spccnt++;
+ }
+ s2 = stat_str[j];
+
+ /* print out the line formatted like Debian dpkg */
+ printf("%c%c %-14s %s\n", s1, s2, name_str, vers_str);
+ }
+ }
+}
+
+static void remove_package(const unsigned package_num, int noisy)
+{
+ const char *package_name = name_hashtable[package_hashtable[package_num]->name];
+ const char *package_version = name_hashtable[package_hashtable[package_num]->version];
+ const unsigned status_num = search_status_hashtable(package_name);
+ const int package_name_length = strlen(package_name);
+ char **remove_files;
+ char **exclude_files;
+ char list_name[package_name_length + 25];
+ char conffile_name[package_name_length + 30];
+
+ if (noisy)
+ printf("Removing %s (%s)...\n", package_name, package_version);
+
+ /* Run prerm script */
+ run_package_script_or_die(package_name, "prerm");
+
+ /* Create a list of files to remove, and a separate list of those to keep */
+ sprintf(list_name, "/var/lib/dpkg/info/%s.%s", package_name, "list");
+ remove_files = create_list(list_name);
+
+ sprintf(conffile_name, "/var/lib/dpkg/info/%s.%s", package_name, "conffiles");
+ exclude_files = create_list(conffile_name);
+
+ /* Some directories can't be removed straight away, so do multiple passes */
+ while (remove_file_array(remove_files, exclude_files))
+ continue;
+ free_array(exclude_files);
+ free_array(remove_files);
+
+ /* Create a list of files in /var/lib/dpkg/info/<package>.* to keep */
+ exclude_files = xzalloc(sizeof(exclude_files[0]) * 3);
+ exclude_files[0] = xstrdup(conffile_name);
+ exclude_files[1] = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "postrm");
+
+ /* Create a list of all /var/lib/dpkg/info/<package> files */
+ remove_files = all_control_list(package_name);
+
+ remove_file_array(remove_files, exclude_files);
+ free_array(remove_files);
+ free_array(exclude_files);
+
+ /* rename <package>.conffiles to <package>.list
+ * The conffiles control file isn't required in Debian packages, so don't
+ * error out if it's missing. */
+ rename(conffile_name, list_name);
+
+ /* Change package status */
+ set_status(status_num, "config-files", 3);
+}
+
+static void purge_package(const unsigned package_num)
+{
+ const char *package_name = name_hashtable[package_hashtable[package_num]->name];
+ const char *package_version = name_hashtable[package_hashtable[package_num]->version];
+ const unsigned status_num = search_status_hashtable(package_name);
+ char **remove_files;
+ char **exclude_files;
+ char list_name[strlen(package_name) + 25];
+
+ printf("Purging %s (%s)...\n", package_name, package_version);
+
+ /* Run prerm script */
+ run_package_script_or_die(package_name, "prerm");
+
+ /* Create a list of files to remove */
+ sprintf(list_name, "/var/lib/dpkg/info/%s.%s", package_name, "list");
+ remove_files = create_list(list_name);
+
+ /* Some directories cant be removed straight away, so do multiple passes */
+ while (remove_file_array(remove_files, NULL))
+ continue;
+ free_array(remove_files);
+
+ /* Create a list of all /var/lib/dpkg/info/<package> files */
+ remove_files = all_control_list(package_name);
+
+ /* Delete all of them except the postrm script */
+ exclude_files = xzalloc(sizeof(exclude_files[0]) * 2);
+ exclude_files[0] = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "postrm");
+ remove_file_array(remove_files, exclude_files);
+ free_array(exclude_files);
+
+ /* Run and remove postrm script */
+ run_package_script_or_die(package_name, "postrm");
+ remove_file_array(remove_files, NULL);
+
+ free_array(remove_files);
+
+ /* Change package status */
+ set_status(status_num, "not-installed", 3);
+}
+
+static archive_handle_t *init_archive_deb_ar(const char *filename)
+{
+ archive_handle_t *ar_handle;
+
+ /* Setup an ar archive handle that refers to the gzip sub archive */
+ ar_handle = init_handle();
+ ar_handle->filter = filter_accept_list_reassign;
+ ar_handle->src_fd = xopen(filename, O_RDONLY);
+
+ return ar_handle;
+}
+
+static void init_archive_deb_control(archive_handle_t *ar_handle)
+{
+ archive_handle_t *tar_handle;
+
+ /* Setup the tar archive handle */
+ tar_handle = init_handle();
+ tar_handle->src_fd = ar_handle->src_fd;
+
+ /* We don't care about data.tar.* or debian-binary, just control.tar.* */
+#if ENABLE_FEATURE_SEAMLESS_GZ
+ llist_add_to(&(ar_handle->accept), (char*)"control.tar.gz");
+#endif
+#if ENABLE_FEATURE_SEAMLESS_BZ2
+ llist_add_to(&(ar_handle->accept), (char*)"control.tar.bz2");
+#endif
+
+ /* Assign the tar handle as a subarchive of the ar handle */
+ ar_handle->dpkg__sub_archive = tar_handle;
+}
+
+static void init_archive_deb_data(archive_handle_t *ar_handle)
+{
+ archive_handle_t *tar_handle;
+
+ /* Setup the tar archive handle */
+ tar_handle = init_handle();
+ tar_handle->src_fd = ar_handle->src_fd;
+
+ /* We don't care about control.tar.* or debian-binary, just data.tar.* */
+#if ENABLE_FEATURE_SEAMLESS_GZ
+ llist_add_to(&(ar_handle->accept), (char*)"data.tar.gz");
+#endif
+#if ENABLE_FEATURE_SEAMLESS_BZ2
+ llist_add_to(&(ar_handle->accept), (char*)"data.tar.bz2");
+#endif
+
+ /* Assign the tar handle as a subarchive of the ar handle */
+ ar_handle->dpkg__sub_archive = tar_handle;
+}
+
+static void FAST_FUNC data_extract_to_buffer(archive_handle_t *archive_handle)
+{
+ unsigned size = archive_handle->file_header->size;
+
+ archive_handle->dpkg__buffer = xzalloc(size + 1);
+ xread(archive_handle->src_fd, archive_handle->dpkg__buffer, size);
+}
+
+static char *deb_extract_control_file_to_buffer(archive_handle_t *ar_handle, llist_t *myaccept)
+{
+ ar_handle->dpkg__sub_archive->action_data = data_extract_to_buffer;
+ ar_handle->dpkg__sub_archive->accept = myaccept;
+ ar_handle->dpkg__sub_archive->filter = filter_accept_list;
+
+ unpack_ar_archive(ar_handle);
+ close(ar_handle->src_fd);
+
+ return ar_handle->dpkg__sub_archive->dpkg__buffer;
+}
+
+static void append_control_file_to_llist(const char *package_name, const char *control_name, llist_t **ll)
+{
+ FILE *fp;
+ char *filename, *line;
+
+ filename = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, control_name);
+ fp = fopen_for_read(filename);
+ free(filename);
+ if (fp != NULL) {
+ while ((line = xmalloc_fgetline(fp)) != NULL)
+ llist_add_to(ll, line);
+ fclose(fp);
+ }
+}
+
+static char FAST_FUNC filter_rename_config(archive_handle_t *archive_handle)
+{
+ int fd;
+ char *name_ptr = archive_handle->file_header->name + 1;
+
+ /* Is this file marked as config file? */
+ if (!find_list_entry(archive_handle->accept, name_ptr))
+ return EXIT_SUCCESS; /* no */
+
+ fd = open(name_ptr, O_RDONLY);
+ if (fd >= 0) {
+ md5_ctx_t md5;
+ char *md5line, *buf;
+ int count;
+
+ /* Calculate MD5 of existing file */
+ buf = xmalloc(4096);
+ md5_begin(&md5);
+ while ((count = safe_read(fd, buf, 4096)) > 0)
+ md5_hash(&md5, buf, count);
+ md5_end(&md5, buf); /* using buf as result storage */
+ close(fd);
+
+ md5line = xmalloc(16 * 2 + 2 + strlen(name_ptr) + 1);
+ sprintf(bin2hex(md5line, buf, 16), " %s", name_ptr);
+ free(buf);
+
+ /* Is it changed after install? */
+ if (find_list_entry(archive_handle->accept, md5line) == NULL) {
+ printf("Warning: Creating %s as %s.dpkg-new\n", name_ptr, name_ptr);
+ archive_handle->file_header->name = xasprintf("%s.dpkg-new", archive_handle->file_header->name);
+ }
+ free(md5line);
+ }
+ return EXIT_SUCCESS;
+}
+
+static void FAST_FUNC data_extract_all_prefix(archive_handle_t *archive_handle)
+{
+ char *name_ptr = archive_handle->file_header->name;
+
+ /* Skip all leading "/" */
+ while (*name_ptr == '/')
+ name_ptr++;
+ /* Skip all leading "./" and "../" */
+ while (name_ptr[0] == '.') {
+ if (name_ptr[1] == '.')
+ name_ptr++;
+ if (name_ptr[1] != '/')
+ break;
+ name_ptr += 2;
+ }
+
+ if (name_ptr[0] != '\0') {
+ archive_handle->file_header->name = xasprintf("%s%s", archive_handle->dpkg__buffer, name_ptr);
+ data_extract_all(archive_handle);
+ if (fnmatch("*.dpkg-new", archive_handle->file_header->name, 0) == 0) {
+ /* remove .dpkg-new suffix */
+ archive_handle->file_header->name[strlen(archive_handle->file_header->name) - 9] = '\0';
+ }
+ }
+}
+
+enum {
+ /* Commands */
+ OPT_configure = (1 << 0),
+ OPT_install = (1 << 1),
+ OPT_list_installed = (1 << 2),
+ OPT_purge = (1 << 3),
+ OPT_remove = (1 << 4),
+ OPT_unpack = (1 << 5),
+ OPTMASK_cmd = (1 << 6) - 1,
+ /* Options */
+ OPT_force = (1 << 6),
+ OPT_force_ignore_depends = (1 << 7),
+ OPT_force_confnew = (1 << 8),
+ OPT_force_confold = (1 << 9),
+};
+
+static void unpack_package(deb_file_t *deb_file)
+{
+ const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name];
+ const unsigned status_num = search_status_hashtable(package_name);
+ const unsigned status_package_num = status_hashtable[status_num]->package;
+ char *info_prefix;
+ char *list_filename;
+ archive_handle_t *archive_handle;
+ FILE *out_stream;
+ llist_t *accept_list;
+ llist_t *conffile_list;
+ int i;
+
+ /* If existing version, remove it first */
+ conffile_list = NULL;
+ if (strcmp(name_hashtable[get_status(status_num, 3)], "installed") == 0) {
+ /* Package is already installed, remove old version first */
+ printf("Preparing to replace %s %s (using %s)...\n", package_name,
+ name_hashtable[package_hashtable[status_package_num]->version],
+ deb_file->filename);
+
+ /* Read md5sums from old package */
+ if (!(option_mask32 & OPT_force_confold))
+ append_control_file_to_llist(package_name, "md5sums", &conffile_list);
+
+ remove_package(status_package_num, 0);
+ } else {
+ printf("Unpacking %s (from %s)...\n", package_name, deb_file->filename);
+ }
+
+ /* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */
+ info_prefix = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "");
+ archive_handle = init_archive_deb_ar(deb_file->filename);
+ init_archive_deb_control(archive_handle);
+
+ accept_list = NULL;
+ i = 0;
+ while (i < ARRAY_SIZE(all_control_files)) {
+ char *c = xasprintf("./%s", all_control_files[i]);
+ llist_add_to(&accept_list, c);
+ i++;
+ }
+ archive_handle->dpkg__sub_archive->accept = accept_list;
+ archive_handle->dpkg__sub_archive->filter = filter_accept_list;
+ archive_handle->dpkg__sub_archive->action_data = data_extract_all_prefix;
+ archive_handle->dpkg__sub_archive->dpkg__buffer = info_prefix;
+ archive_handle->dpkg__sub_archive->ah_flags |= ARCHIVE_UNLINK_OLD;
+ unpack_ar_archive(archive_handle);
+
+ /* Run the preinst prior to extracting */
+ run_package_script_or_die(package_name, "preinst");
+
+ /* Don't overwrite existing config files */
+ if (!(option_mask32 & OPT_force_confnew))
+ append_control_file_to_llist(package_name, "conffiles", &conffile_list);
+
+ /* Extract data.tar.gz to the root directory */
+ archive_handle = init_archive_deb_ar(deb_file->filename);
+ init_archive_deb_data(archive_handle);
+ archive_handle->dpkg__sub_archive->accept = conffile_list;
+ /* Why ARCHIVE_REMEMBER_NAMES?
+ * We want names collected in ->passed list even if conffile_list
+ * is NULL (otherwise get_header_tar may optimize name saving out):
+ */
+ archive_handle->dpkg__sub_archive->ah_flags |= ARCHIVE_REMEMBER_NAMES | ARCHIVE_UNLINK_OLD;
+ archive_handle->dpkg__sub_archive->filter = filter_rename_config;
+ archive_handle->dpkg__sub_archive->action_data = data_extract_all_prefix;
+ archive_handle->dpkg__sub_archive->dpkg__buffer = (char*)"/"; /* huh? */
+ unpack_ar_archive(archive_handle);
+
+ /* Create the list file */
+ list_filename = xasprintf("/var/lib/dpkg/info/%s.%s", package_name, "list");
+ out_stream = xfopen_for_write(list_filename);
+ archive_handle->dpkg__sub_archive->passed = llist_rev(archive_handle->dpkg__sub_archive->passed);
+ while (archive_handle->dpkg__sub_archive->passed) {
+ char *filename = llist_pop(&archive_handle->dpkg__sub_archive->passed);
+ /* the leading . has been stripped by data_extract_all_prefix already */
+ fprintf(out_stream, "%s\n", filename);
+ free(filename);
+ }
+ fclose(out_stream);
+
+ /* change status */
+ set_status(status_num, "install", 1);
+ set_status(status_num, "unpacked", 3);
+
+ free(info_prefix);
+ free(list_filename);
+}
+
+static void configure_package(deb_file_t *deb_file)
+{
+ const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name];
+ const char *package_version = name_hashtable[package_hashtable[deb_file->package]->version];
+ const int status_num = search_status_hashtable(package_name);
+
+ printf("Setting up %s (%s)...\n", package_name, package_version);
+
+ /* Run the postinst script */
+ /* TODO: handle failure gracefully */
+ run_package_script_or_die(package_name, "postinst");
+
+ /* Change status to reflect success */
+ set_status(status_num, "install", 1);
+ set_status(status_num, "installed", 3);
+}
+
+int dpkg_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int dpkg_main(int argc UNUSED_PARAM, char **argv)
+{
+ deb_file_t **deb_file = NULL;
+ status_node_t *status_node;
+ char *str_f;
+ int opt;
+ int package_num;
+ int deb_count = 0;
+ int state_status;
+ int status_num;
+ int i;
+#if ENABLE_LONG_OPTS
+ static const char dpkg_longopts[] ALIGN1 =
+// FIXME: we use -C non-compatibly, should be:
+// "-C|--audit Check for broken package(s)"
+ "configure\0" No_argument "C"
+ "force\0" Required_argument "F"
+ "install\0" No_argument "i"
+ "list\0" No_argument "l"
+ "purge\0" No_argument "P"
+ "remove\0" No_argument "r"
+ "unpack\0" No_argument "u"
+ "force-depends\0" No_argument "\xff"
+ "force-confnew\0" No_argument "\xfe"
+ "force-confold\0" No_argument "\xfd"
+ ;
+#endif
+
+ INIT_G();
+
+ IF_LONG_OPTS(applet_long_options = dpkg_longopts);
+ opt = getopt32(argv, "CilPruF:", &str_f);
+ argv += optind;
+ //if (opt & OPT_configure) ... // -C
+ if (opt & OPT_force) { // -F (--force in official dpkg)
+ if (strcmp(str_f, "depends") == 0)
+ opt |= OPT_force_ignore_depends;
+ else if (strcmp(str_f, "confnew") == 0)
+ opt |= OPT_force_confnew;
+ else if (strcmp(str_f, "confold") == 0)
+ opt |= OPT_force_confold;
+ else
+ bb_show_usage();
+ option_mask32 = opt;
+ }
+ //if (opt & OPT_install) ... // -i
+ //if (opt & OPT_list_installed) ... // -l
+ //if (opt & OPT_purge) ... // -P
+ //if (opt & OPT_remove) ... // -r
+ //if (opt & OPT_unpack) ... // -u (--unpack in official dpkg)
+ if (!(opt & OPTMASK_cmd) /* no cmd */
+ || ((opt & OPTMASK_cmd) & ((opt & OPTMASK_cmd)-1)) /* more than one cmd */
+ ) {
+ bb_show_usage();
+ }
+
+/* puts("(Reading database ... xxxxx files and directories installed.)"); */
+ index_status_file("/var/lib/dpkg/status");
+
+ /* if the list action was given print the installed packages and exit */
+ if (opt & OPT_list_installed) {
+ list_packages(argv[0]); /* param can be NULL */
+ return EXIT_SUCCESS;
+ }
+
+ /* Read arguments and store relevant info in structs */
+ while (*argv) {
+ /* deb_count = nb_elem - 1 and we need nb_elem + 1 to allocate terminal node [NULL pointer] */
+ deb_file = xrealloc_vector(deb_file, 2, deb_count);
+ deb_file[deb_count] = xzalloc(sizeof(deb_file[0][0]));
+ if (opt & (OPT_install | OPT_unpack)) {
+ /* -i/-u: require filename */
+ archive_handle_t *archive_handle;
+ llist_t *control_list = NULL;
+
+ /* Extract the control file */
+ llist_add_to(&control_list, (char*)"./control");
+ archive_handle = init_archive_deb_ar(argv[0]);
+ init_archive_deb_control(archive_handle);
+ deb_file[deb_count]->control_file = deb_extract_control_file_to_buffer(archive_handle, control_list);
+ if (deb_file[deb_count]->control_file == NULL) {
+ bb_error_msg_and_die("can't extract control file");
+ }
+ deb_file[deb_count]->filename = xstrdup(argv[0]);
+ package_num = fill_package_struct(deb_file[deb_count]->control_file);
+
+ if (package_num == -1) {
+ bb_error_msg("invalid control file in %s", argv[0]);
+ argv++;
+ continue;
+ }
+ deb_file[deb_count]->package = (unsigned) package_num;
+
+ /* Add the package to the status hashtable */
+ if (opt & (OPT_unpack | OPT_install)) {
+ /* Try and find a currently installed version of this package */
+ status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]);
+ /* If no previous entry was found initialise a new entry */
+ if (status_hashtable[status_num] == NULL
+ || status_hashtable[status_num]->status == 0
+ ) {
+ status_node = xmalloc(sizeof(status_node_t));
+ status_node->package = deb_file[deb_count]->package;
+ /* reinstreq isnt changed to "ok" until the package control info
+ * is written to the status file*/
+ status_node->status = search_name_hashtable("install reinstreq not-installed");
+ status_hashtable[status_num] = status_node;
+ } else {
+ set_status(status_num, "install", 1);
+ set_status(status_num, "reinstreq", 2);
+ }
+ }
+ } else if (opt & (OPT_configure | OPT_purge | OPT_remove)) {
+ /* -C/-p/-r: require package name */
+ deb_file[deb_count]->package = search_package_hashtable(
+ search_name_hashtable(argv[0]),
+ search_name_hashtable("ANY"), VER_ANY);
+ if (package_hashtable[deb_file[deb_count]->package] == NULL) {
+ bb_error_msg_and_die("package %s is uninstalled or unknown", argv[0]);
+ }
+ package_num = deb_file[deb_count]->package;
+ status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
+ state_status = get_status(status_num, 3);
+
+ /* check package status is "installed" */
+ if (opt & OPT_remove) {
+ if (strcmp(name_hashtable[state_status], "not-installed") == 0
+ || strcmp(name_hashtable[state_status], "config-files") == 0
+ ) {
+ bb_error_msg_and_die("%s is already removed", name_hashtable[package_hashtable[package_num]->name]);
+ }
+ set_status(status_num, "deinstall", 1);
+ } else if (opt & OPT_purge) {
+ /* if package status is "conf-files" then its ok */
+ if (strcmp(name_hashtable[state_status], "not-installed") == 0) {
+ bb_error_msg_and_die("%s is already purged", name_hashtable[package_hashtable[package_num]->name]);
+ }
+ set_status(status_num, "purge", 1);
+ }
+ }
+ deb_count++;
+ argv++;
+ }
+ if (!deb_count)
+ bb_error_msg_and_die("no package files specified");
+ deb_file[deb_count] = NULL;
+
+ /* Check that the deb file arguments are installable */
+ if (!(opt & OPT_force_ignore_depends)) {
+ if (!check_deps(deb_file, 0 /*, deb_count*/)) {
+ bb_error_msg_and_die("dependency check failed");
+ }
+ }
+
+ /* TODO: install or remove packages in the correct dependency order */
+ for (i = 0; i < deb_count; i++) {
+ /* Remove or purge packages */
+ if (opt & OPT_remove) {
+ remove_package(deb_file[i]->package, 1);
+ }
+ else if (opt & OPT_purge) {
+ purge_package(deb_file[i]->package);
+ }
+ else if (opt & OPT_unpack) {
+ unpack_package(deb_file[i]);
+ }
+ else if (opt & OPT_install) {
+ unpack_package(deb_file[i]);
+ /* package is configured in second pass below */
+ }
+ else if (opt & OPT_configure) {
+ configure_package(deb_file[i]);
+ }
+ }
+ /* configure installed packages */
+ if (opt & OPT_install) {
+ for (i = 0; i < deb_count; i++)
+ configure_package(deb_file[i]);
+ }
+
+ write_status_file(deb_file);
+
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ for (i = 0; i < deb_count; i++) {
+ free(deb_file[i]->control_file);
+ free(deb_file[i]->filename);
+ free(deb_file[i]);
+ }
+
+ free(deb_file);
+
+ for (i = 0; i < NAME_HASH_PRIME; i++) {
+ free(name_hashtable[i]);
+ }
+
+ for (i = 0; i < PACKAGE_HASH_PRIME; i++) {
+ free_package(package_hashtable[i]);
+ }
+
+ for (i = 0; i < STATUS_HASH_PRIME; i++) {
+ free(status_hashtable[i]);
+ }
+
+ free(status_hashtable);
+ free(package_hashtable);
+ free(name_hashtable);
+ }
+
+ return EXIT_SUCCESS;
+}