-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <search.h>
-#include <errno.h>
+/* 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
+ *
+ * Started life as a busybox implementation of udpkg
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+/*
+ * 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)
+ *
+ */
+
#include <fcntl.h>
+#include <getopt.h>
+#include <stdlib.h>
+#include <string.h>
#include <unistd.h>
-#include <utime.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-
+#include "unarchive.h"
#include "busybox.h"
-//#define PACKAGE "udpkg"
-//#define VERSION "0.1"
-
-/*
- * Should we do full dependency checking?
+/* 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 int, if you go to 16 bit you will overlap
+ * int's and chaos is assured, 16381 is the max prime for 14 bit field
*/
-#define DODEPENDS 1
-/*
- * Should we do debugging?
- */
-#define DODEBUG 0
-
-#ifdef DODEBUG
-#define SYSTEM(x) do_system(x)
-#define DPRINTF(fmt,args...) fprintf(stderr, fmt, ##args)
-#else
-#define SYSTEM(x) system(x)
-#define DPRINTF(fmt,args...) /* nothing */
-#endif
+/* 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
+static char *name_hashtable[NAME_HASH_PRIME + 1];
+
+/* 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 int operator:3;
+ unsigned int type:4;
+ unsigned int name:14;
+ unsigned int version:14;
+} edge_t;
+
+typedef struct common_node_s {
+ unsigned int name:14;
+ unsigned int version:14;
+ unsigned int num_of_edges:14;
+ edge_t **edge;
+} common_node_t;
+static common_node_t *package_hashtable[PACKAGE_HASH_PRIME + 1];
+
+/* 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 int package:14; /* has to fit PACKAGE_HASH_PRIME */
+ unsigned int status:14; /* has to fit STATUS_HASH_PRIME */
+} status_node_t;
+static status_node_t *status_hashtable[STATUS_HASH_PRIME + 1];
+
+/* 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
+};
-#define BUFSIZE 4096
-#define DEPENDSMAX 64 /* maximum number of depends we can handle */
-
-#define ADMINDIR "/var/lib/dpkg"
-#define STATUSFILE ADMINDIR ## "/status.udeb"
-#define DPKGCIDIR ADMINDIR ## "/tmp.ci/"
-static const char infodir[] = "/var/lib/dpkg/info/";
-static const char udpkg_quiet[] = "UDPKG_QUIET";
-
-//static const int status_wantstart = 0;
-//static const int status_wantunknown = (1 << 0);
-static const int status_wantinstall = (1 << 1);
-//static const int status_wanthold = (1 << 2);
-//static const int status_wantdeinstall = (1 << 3);
-//static const int status_wantpurge = (1 << 4);
-static const int status_wantmask = 31;
-
-//static const int status_flagstart = 5;
-static const int status_flagok = (1 << 5); /* 32 */
-//static const int status_flagreinstreq = (1 << 6);
-//static const int status_flaghold = (1 << 7);
-//static const int status_flagholdreinstreq = (1 << 8);
-static const int status_flagmask = 480;
-
-//static const int status_statusstart = 9;
-//static const int status_statusnoninstalled = (1 << 9); /* 512 */
-static const int status_statusunpacked = (1 << 10);
-static const int status_statushalfconfigured = (1 << 11);
-static const int status_statusinstalled = (1 << 12);
-static const int status_statushalfinstalled = (1 << 13);
-//static const int status_statusconfigfiles = (1 << 14);
-//static const int status_statuspostinstfailed = (1 << 15);
-//static const int status_statusremovalfailed = (1 << 16);
-static const int status_statusmask = 130560; /* i assume status_statusinstalled is supposed to be included */
-
-static const char *statuswords[][10] = {
- { (char *) 0, "unknown", "install", "hold", "deinstall", "purge", 0 },
- { (char *) 5, "ok", "reinstreq", "hold", "hold-reinstreq", 0 },
- { (char *) 9, "not-installed", "unpacked", "half-configured",
- "installed", "half-installed", "config-files",
- "post-inst-failed", "removal-failed", 0 }
+enum dpkg_opt_e {
+ dpkg_opt_purge = 1,
+ dpkg_opt_remove = 2,
+ dpkg_opt_unpack = 4,
+ dpkg_opt_configure = 8,
+ dpkg_opt_install = 16,
+ dpkg_opt_package_name = 32,
+ dpkg_opt_filename = 64,
+ dpkg_opt_list_installed = 128,
+ dpkg_opt_force_ignore_depends = 256
};
-const int color_white = 0;
-const int color_grey = 1;
-const int color_black = 2;
+typedef struct deb_file_s {
+ char *control_file;
+ char *filename;
+ unsigned int package:14;
+} deb_file_t;
-/* data structures */
-typedef struct package_s {
- char *file;
- char *package;
- char *version;
- char *depends;
- char *provides;
- char *description;
- int installer_menu_item;
- unsigned long status;
- char color; /* for topo-sort */
- struct package_s *requiredfor[DEPENDSMAX];
- unsigned short requiredcount;
- struct package_s *next;
-} package_t;
-static int package_compare(const void *p1, const void *p2)
+static void make_hash(const char *key, unsigned int *start, unsigned int *decrement, const int hash_prime)
{
- return strcmp(((package_t *)p1)->package,
- ((package_t *)p2)->package);
-}
+ unsigned long int hash_num = key[0];
+ int len = strlen(key);
+ int i;
-#ifdef DODEPENDS
-#include <ctype.h>
+ /* 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 int) hash_num % hash_prime;
+ *decrement = (unsigned int) 1 + (hash_num % (hash_prime - 1));
+}
-static char **depends_split(const char *dependsstr)
+/* this adds the key to the hash table */
+static int search_name_hashtable(const char *key)
{
- static char *dependsvec[DEPENDSMAX];
- char *p;
- int i = 0;
+ unsigned int probe_address = 0;
+ unsigned int probe_decrement = 0;
+// char *temp;
+
+ 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);
+ } else {
+ probe_address -= probe_decrement;
+ if ((int)probe_address < 0) {
+ probe_address += NAME_HASH_PRIME;
+ }
+ }
+ }
+ name_hashtable[probe_address] = bb_xstrdup(key);
+ return(probe_address);
+}
- dependsvec[0] = 0;
-
- if (dependsstr != 0)
- {
- p = strdup(dependsstr);
- while (*p != 0 && *p != '\n')
- {
- if (*p != ' ')
- {
- if (*p == ',')
- {
- *p = 0;
- dependsvec[++i] = 0;
- }
- else if (dependsvec[i] == 0)
- dependsvec[i] = p;
+/* this DOESNT add the key to the hashtable
+ * TODO make it consistent with search_name_hashtable
+ */
+static unsigned int search_status_hashtable(const char *key)
+{
+ unsigned int probe_address = 0;
+ unsigned int probe_decrement = 0;
+
+ 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;
+ } else {
+ probe_address -= probe_decrement;
+ if ((int)probe_address < 0) {
+ probe_address += STATUS_HASH_PRIME;
}
- else
- *p = 0; /* eat the space... */
- p++;
}
- *p = 0;
}
- dependsvec[i+1] = 0;
- return dependsvec;
+ return(probe_address);
}
-static void depends_sort_visit(package_t **ordered, package_t *pkgs,
- package_t *pkg)
+/* Need to rethink version comparison, maybe the official dpkg has something i can use ? */
+static int version_compare_part(const char *version1, const char *version2)
{
- /* Topological sort algorithm:
- * ordered is the output list, pkgs is the dependency graph, pkg is
- * the current node
- *
- * recursively add all the adjacent nodes to the ordered list, marking
- * each one as visited along the way
- *
- * yes, this algorithm looks a bit odd when all the params have the
- * same type :-)
- */
- unsigned short i;
+ int upstream_len1 = 0;
+ int upstream_len2 = 0;
+ char *name1_char;
+ char *name2_char;
+ int len1 = 0;
+ int len2 = 0;
+ int tmp_int;
+ int ver_num1;
+ int ver_num2;
+ int ret;
+
+ if (version1 == NULL) {
+ version1 = bb_xstrdup("");
+ }
+ if (version2 == NULL) {
+ version2 = bb_xstrdup("");
+ }
+ upstream_len1 = strlen(version1);
+ upstream_len2 = strlen(version2);
+
+ while ((len1 < upstream_len1) || (len2 < upstream_len2)) {
+ /* Compare non-digit section */
+ tmp_int = strcspn(&version1[len1], "0123456789");
+ name1_char = bb_xstrndup(&version1[len1], tmp_int);
+ len1 += tmp_int;
+ tmp_int = strcspn(&version2[len2], "0123456789");
+ name2_char = bb_xstrndup(&version2[len2], tmp_int);
+ len2 += tmp_int;
+ tmp_int = strcmp(name1_char, name2_char);
+ free(name1_char);
+ free(name2_char);
+ if (tmp_int != 0) {
+ ret = tmp_int;
+ goto cleanup_version_compare_part;
+ }
- /* mark node as processing */
- pkg->color = color_grey;
-
- /* visit each not-yet-visited node */
- for (i = 0; i < pkg->requiredcount; i++)
- if (pkg->requiredfor[i]->color == color_white)
- depends_sort_visit(ordered, pkgs, pkg->requiredfor[i]);
-
-#if 0
- /* add it to the list */
- newnode = (struct package_t *)malloc(sizeof(struct package_t));
- /* make a shallow copy */
- *newnode = *pkg;
- newnode->next = *ordered;
- *ordered = newnode;
-#endif
- pkg->next = *ordered;
- *ordered = pkg;
+ /* Compare digits */
+ tmp_int = strspn(&version1[len1], "0123456789");
+ name1_char = bb_xstrndup(&version1[len1], tmp_int);
+ len1 += tmp_int;
+ tmp_int = strspn(&version2[len2], "0123456789");
+ name2_char = bb_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) {
+ ret = -1;
+ goto cleanup_version_compare_part;
+ }
+ else if (ver_num1 > ver_num2) {
+ ret = 1;
+ goto cleanup_version_compare_part;
+ }
+ }
+ ret = 0;
+cleanup_version_compare_part:
+ return(ret);
+}
+
+/* if ver1 < ver2 return -1,
+ * if ver1 = ver2 return 0,
+ * if ver1 > ver2 return 1,
+ */
+static int version_compare(const unsigned int ver1, const unsigned int ver2)
+{
+ char *ch_ver1 = name_hashtable[ver1];
+ char *ch_ver2 = name_hashtable[ver2];
+
+ char epoch1, epoch2;
+ char *deb_ver1, *deb_ver2;
+ char *ver1_ptr, *ver2_ptr;
+ char *upstream_ver1;
+ char *upstream_ver2;
+ int result;
+
+ /* Compare epoch */
+ if (ch_ver1[1] == ':') {
+ epoch1 = ch_ver1[0];
+ ver1_ptr = strchr(ch_ver1, ':') + 1;
+ } else {
+ epoch1 = '0';
+ ver1_ptr = ch_ver1;
+ }
+ if (ch_ver2[1] == ':') {
+ epoch2 = ch_ver2[0];
+ ver2_ptr = strchr(ch_ver2, ':') + 1;
+ } else {
+ epoch2 = '0';
+ ver2_ptr = ch_ver2;
+ }
+ if (epoch1 < epoch2) {
+ return(-1);
+ }
+ else if (epoch1 > epoch2) {
+ return(1);
+ }
+
+ /* Compare upstream version */
+ upstream_ver1 = bb_xstrdup(ver1_ptr);
+ upstream_ver2 = bb_xstrdup(ver2_ptr);
- /* mark node as done */
- pkg->color = color_black;
+ /* 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] = '\0';
+ deb_ver1++;
+ }
+ if (deb_ver2) {
+ deb_ver2[0] = '\0';
+ deb_ver2++;
+ }
+ result = version_compare_part(upstream_ver1, upstream_ver2);
+
+ free(upstream_ver1);
+ free(upstream_ver2);
+
+ if (result != 0) {
+ return(result);
+ }
+
+ /* Compare debian versions */
+ return(version_compare_part(deb_ver1, deb_ver2));
}
-static package_t *depends_sort(package_t *pkgs)
+static int test_version(const unsigned int version1, const unsigned int version2, const unsigned int operator)
{
- /* TODO: it needs to break cycles in the to-be-installed package
- * graph... */
- package_t *ordered = NULL;
- package_t *pkg;
+ const int version_result = version_compare(version1, version2);
+ switch(operator) {
+ case (VER_ANY):
+ return(TRUE);
+ case (VER_EQUAL):
+ if (version_result == 0) {
+ return(TRUE);
+ }
+ break;
+ case (VER_LESS):
+ if (version_result < 0) {
+ return(TRUE);
+ }
+ break;
+ case (VER_LESS_EQUAL):
+ if (version_result <= 0) {
+ return(TRUE);
+ }
+ break;
+ case (VER_MORE):
+ if (version_result > 0) {
+ return(TRUE);
+ }
+ break;
+ case (VER_MORE_EQUAL):
+ if (version_result >= 0) {
+ return(TRUE);
+ }
+ break;
+ }
+ return(FALSE);
+}
- for (pkg = pkgs; pkg != 0; pkg = pkg->next)
- pkg->color = color_white;
- for (pkg = pkgs; pkg != 0; pkg = pkg->next)
- if (pkg->color == color_white)
- depends_sort_visit(&ordered, pkgs, pkg);
+static int search_package_hashtable(const unsigned int name, const unsigned int version, const unsigned int operator)
+{
+ unsigned int probe_address = 0;
+ unsigned int probe_decrement = 0;
+
+ 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);
+}
- /* Leaks the old list... return the new one... */
- return ordered;
+/*
+ * 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->num_of_edges++;
+ node->edge = xrealloc(node->edge, sizeof(edge_t) * (node->num_of_edges + 1));
+ node->edge[node->num_of_edges - 1] = edge;
+}
-/* resolve package dependencies --
- * for each package in the list of packages to be installed, we parse its
- * dependency info to determine if the dependent packages are either
- * already installed, or are scheduled to be installed. If both tests fail
- * than bail.
+/*
+ * Create one new node and one new edge for every dependency.
*
- * The algorithm here is O(n^2*m) where n = number of packages to be
- * installed and m is the # of dependencies per package. Not a terribly
- * efficient algorithm, but given that at any one time you are unlikely
- * to install a very large number of packages it doesn't really matter
+ * 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 package_t *depends_resolve(package_t *pkgs, void *status)
+static void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned int edge_type)
{
- package_t *pkg, *chk;
- package_t dependpkg;
- char **dependsvec;
- int i;
- void *found;
-
- for (pkg = pkgs; pkg != 0; pkg = pkg->next)
- {
- dependsvec = depends_split(pkg->depends);
- i = 0;
- while (dependsvec[i] != 0)
- {
- /* Check for dependencies; first look for installed packages */
- dependpkg.package = dependsvec[i];
- if ((found = tfind(&dependpkg, &status, package_compare)) == 0 ||
- ((chk = *(package_t **)found) &&
- (chk->status & (status_flagok | status_statusinstalled)) !=
- (status_flagok | status_statusinstalled)))
- {
- /* if it fails, we look through the list of packages we are going to
- * install */
- for (chk = pkgs; chk != 0; chk = chk->next)
- {
- if (strcmp(chk->package, dependsvec[i]) == 0 ||
- (chk->provides &&
- strncmp(chk->provides, dependsvec[i], strlen(dependsvec[i])) == 0))
- {
- if (chk->requiredcount >= DEPENDSMAX)
- {
- fprintf(stderr, "Too many dependencies for %s\n",
- chk->package);
- return 0;
- }
- if (chk != pkg)
- chk->requiredfor[chk->requiredcount++] = pkg;
- break;
+ char *line = bb_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 = bb_xstrdup(field);
+ field2 = strtok_r(line2, "|", &line_ptr2);
+ if ( (edge_type == EDGE_DEPENDS || edge_type == EDGE_PRE_DEPENDS) &&
+ (strcmp(field, field2) != 0)) {
+ or_edge = (edge_t *)xmalloc(sizeof(edge_t));
+ or_edge->type = edge_type + 1;
+ } else {
+ or_edge = NULL;
+ }
+
+ if ( or_edge ) {
+ or_edge->name = search_name_hashtable(field);
+ or_edge->version = 0; // tracks the number of altenatives
+
+ add_edge_to_node(parent_node, or_edge);
+ }
+
+ do {
+ edge = (edge_t *) 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(field2, " ");
+ 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\n");
}
}
- if (chk == 0)
- {
- fprintf(stderr, "%s depends on %s, but it is not going to be installed\n", pkg->package, dependsvec[i]);
- return 0;
- }
+ /* 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);
}
- i++;
- }
- }
- return depends_sort(pkgs);
+ /* 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);
+ } while ((field2 = strtok_r(NULL, "|", &line_ptr2)) != NULL);
+ free(line2);
+ } while ((field = strtok_r(NULL, ",", &line_ptr1)) != NULL);
+ free(line);
+
+ return;
}
-#endif
-/* Status file handling routines
- *
- * This is a fairly minimalistic implementation. there are two main functions
- * that are supported:
- *
- * 1) reading the entire status file:
- * the status file is read into memory as a binary-tree, with just the
- * package and status info preserved
- *
- * 2) merging the status file
- * control info from (new) packages is merged into the status file,
- * replacing any pre-existing entries. when a merge happens, status info
- * read using the status_read function is written back to the status file
- */
+static void free_package(common_node_t *node)
+{
+ unsigned short i;
+ if (node) {
+ for (i = 0; i < node->num_of_edges; i++) {
+ free(node->edge[i]);
+ }
+ free(node->edge);
+ free(node);
+ }
+}
-static unsigned long status_parse(const char *line)
+static unsigned int fill_package_struct(char *control_buffer)
{
- char *p;
- int i, j;
- unsigned long l = 0;
- for (i = 0; i < 3; i++)
- {
- p = strchr(line, ' ');
- if (p) *p = 0;
- j = 1;
- while (statuswords[i][j] != 0)
- {
- if (strcmp(line, statuswords[i][j]) == 0)
- {
- l |= (1 << ((int)statuswords[i][0] + j - 1));
+ static const char *const field_names[] = { "Package", "Version",
+ "Pre-Depends", "Depends","Replaces", "Provides",
+ "Conflicts", "Suggests", "Recommends", "Enhances", 0
+ };
+
+ common_node_t *new_node = (common_node_t *) 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 short field_num;
+
+ field_start += read_package_field(&control_buffer[field_start],
+ &field_name, &field_value);
+
+ if (field_name == NULL) {
+ goto fill_package_struct_cleanup; /* Oh no, the dreaded goto statement ! */
+ }
+
+ field_num = compare_string_array(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;
- }
- j++;
}
- if (statuswords[i][j] == 0) return 0; /* parse error */
- line = p+1;
+fill_package_struct_cleanup:
+ free(field_name);
+ free(field_value);
}
- return l;
+
+ 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);
+ if (package_hashtable[num] == NULL) {
+ package_hashtable[num] = new_node;
+ } else {
+ free_package(new_node);
+ }
+ return(num);
}
-static const char *status_print(unsigned long flags)
+/* if num = 1, it returns the want status, 2 returns flag, 3 returns status */
+static unsigned int get_status(const unsigned int status_node, const int num)
{
- /* this function returns a static buffer... */
- static char buf[256];
- int i, j;
+ char *status_string = name_hashtable[status_hashtable[status_node]->status];
+ char *state_sub_string;
+ unsigned int state_sub_num;
+ int len;
+ int i;
- buf[0] = 0;
- for (i = 0; i < 3; i++)
- {
- j = 1;
- while (statuswords[i][j] != 0)
- {
- if ((flags & (1 << ((int)statuswords[i][0] + j - 1))) != 0)
- {
- strcat(buf, statuswords[i][j]);
- if (i < 2) strcat(buf, " ");
- break;
+ /* 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\0");
+ state_sub_string = bb_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 int status_node_num, const char *new_value, const int position)
+{
+ const unsigned int new_value_len = strlen(new_value);
+ const unsigned int new_value_num = search_name_hashtable(new_value);
+ unsigned int want = get_status(status_node_num, 1);
+ unsigned int flag = get_status(status_node_num, 2);
+ unsigned int status = get_status(status_node_num, 3);
+ int want_len = strlen(name_hashtable[want]);
+ int flag_len = strlen(name_hashtable[flag]);
+ int status_len = strlen(name_hashtable[status]);
+ char *new_status;
+
+ switch (position) {
+ case (1):
+ want = new_value_num;
+ want_len = new_value_len;
+ break;
+ case (2):
+ flag = new_value_num;
+ flag_len = new_value_len;
+ break;
+ case (3):
+ status = new_value_num;
+ status_len = new_value_len;
+ break;
+ default:
+ bb_error_msg_and_die("DEBUG ONLY: this shouldnt happen");
+ }
+
+ new_status = bb_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);
+ return;
+}
+
+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\n";
+
+ 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 int status_num;
+
+ status_file = bb_xfopen(filename, "r");
+ while ((control_buffer = fgets_str(status_file, "\n\n")) != NULL) {
+ const unsigned int 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 = bb_xstrndup(status_line, strcspn(status_line, "\n\0"));
+ status_node->status = search_name_hashtable(status_line);
+ free(status_line);
}
- j++;
- }
- if (statuswords[i][j] == 0)
- {
- fprintf(stderr, "corrupted status flag!!\n");
- return NULL;
+ 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);
}
- return buf;
+ fclose(status_file);
+ return;
}
-/*
- * Read a control file (or a stanza of a status file) and parse it,
- * filling parsed fields into the package structure
- */
-static void control_read(FILE *f, package_t *p)
+static void write_buffer_no_status(FILE *new_status_file, const char *control_buffer)
{
- char buf[BUFSIZE];
- while (fgets(buf, BUFSIZE, f) && !feof(f))
- {
- buf[strlen(buf)-1] = 0;
- if (*buf == 0)
- return;
- else if (strstr(buf, "Package: ") == buf)
- {
- p->package = strdup(buf+9);
+ char *name;
+ char *value;
+ int start = 0;
+ while (1) {
+ start += read_package_field(&control_buffer[start], &name, &value);
+ if (name == NULL) {
+ break;
}
- else if (strstr(buf, "Status: ") == buf)
- {
- p->status = status_parse(buf+8);
+ if (strcmp(name, "Status") != 0) {
+ fprintf(new_status_file, "%s: %s\n", name, value);
}
- else if (strstr(buf, "Depends: ") == buf)
- {
- p->depends = strdup(buf+9);
+ }
+ return;
+}
+
+/* This could do with a cleanup */
+static void write_status_file(deb_file_t **deb_file)
+{
+ FILE *old_status_file = bb_xfopen("/var/lib/dpkg/status", "r");
+ FILE *new_status_file = bb_xfopen("/var/lib/dpkg/status.udeb", "w");
+ 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 = fgets_str(old_status_file, "\n\n")) != NULL) {
+ if ((tmp_string = strstr(control_buffer, "Package:")) == NULL) {
+ continue;
}
- else if (strstr(buf, "Provides: ") == buf)
- {
- p->provides = strdup(buf+10);
+
+ tmp_string += 8;
+ tmp_string += strspn(tmp_string, " \n\t");
+ package_name = bb_xstrndup(tmp_string, strcspn(tmp_string, "\n\0"));
+ write_flag = FALSE;
+ tmp_string = strstr(control_buffer, "Status:");
+ if (tmp_string != NULL) {
+ /* Seperate the status value from the control buffer */
+ tmp_string += 7;
+ tmp_string += strspn(tmp_string, " \n\t");
+ status_from_file = bb_xstrndup(tmp_string, strcspn(tmp_string, "\n"));
+ } else {
+ status_from_file = NULL;
}
- /* This is specific to the Debian Installer. Ifdef? */
- else if (strstr(buf, "installer-menu-item: ") == buf)
- {
- p->installer_menu_item = atoi(buf+21);
+
+ /* 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: Couldnt 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);
+ }
+ }
}
- else if (strstr(buf, "Description: ") == buf)
- {
- p->description = strdup(buf+13);
+ /* 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);
}
- /* TODO: localized descriptions */
+
+ 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) {
+ struct stat stat_buf;
+ xstat("/var/lib/dpkg/status", &stat_buf);
+ /* 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");
+ }
+
+ if (rename("/var/lib/dpkg/status.udeb", "/var/lib/dpkg/status") == -1) {
+ bb_error_msg_and_die("DANGER: Couldnt create status file, you need to manually repair your status file");
}
}
-static void *status_read(void)
+/* 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)
{
- FILE *f;
- void *status = 0;
- package_t *m = 0, *p = 0, *t = 0;
+ int status_num = search_status_hashtable(name_hashtable[package_hashtable[package]->name]);
- if ((f = fopen(STATUSFILE, "r")) == NULL)
- {
- perror(STATUSFILE);
+ /* 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 int package_num = deb_file[i]->package;
+ conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1));
+ 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 = (common_node_t *) 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(conflicts, sizeof(int) * (conflicts_num + 1));
+ 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 int 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++;
}
- if (getenv(udpkg_quiet) == NULL)
- printf("(Reading database...)\n");
- while (!feof(f))
- {
- m = (package_t *)malloc(sizeof(package_t));
- memset(m, 0, sizeof(package_t));
- control_read(f, m);
- if (m->package)
- {
- /*
- * If there is an item in the tree by this name,
- * it must be a virtual package; insert real
- * package in preference.
- */
- tdelete(m, &status, package_compare);
- tsearch(m, &status, package_compare);
- if (m->provides)
- {
- /*
- * A "Provides" triggers the insertion
- * of a pseudo package into the status
- * binary-tree.
+
+
+ /* 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 int 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;
+ } else 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
*/
- p = (package_t *)malloc(sizeof(package_t));
- memset(p, 0, sizeof(package_t));
- p->package = strdup(m->provides);
-
- t = *(package_t **)tsearch(p, &status, package_compare);
- if (!(t == p))
- {
- free(p->package);
- free(p);
+ 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 \n",
+ 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 ) {
+ printf("Have a provider but no package information for it\n");
+ continue;
+ }
+ result = !package_satisfies_dependency(provider, package_edge->type);
+
+ if ( result == 0 )
+ break;
+ }
}
- else {
- /*
- * Pseudo package status is the
- * same as the status of the
- * package providing it
- * FIXME: (not quite right, if 2
- * packages of different statuses
- * provide it).
+
+ /* 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]);
+ else
+ 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));
+ } else if ( result == 0 && number_of_alternatives ) {
+ /* we've found a package which
+ * satisfies the dependency,
+ * so skip over the rest of
+ * the alternatives.
*/
- t->status = m->status;
+ j += number_of_alternatives;
+ number_of_alternatives = 0;
}
}
}
- else
- {
- free(m);
- }
}
- fclose(f);
- return status;
+ free(conflicts);
+ return(TRUE);
}
-static int status_merge(void *status, package_t *pkgs)
+static char **create_list(const char *filename)
{
- FILE *fin, *fout;
- char buf[BUFSIZE];
- package_t *pkg = 0, *statpkg = 0;
- package_t locpkg;
- int r = 0;
+ FILE *list_stream;
+ char **file_list = NULL;
+ char *line = NULL;
+ int count = 0;
+
+ /* don't use [xw]fopen here, handle error ourself */
+ list_stream = fopen(filename, "r");
+ if (list_stream == NULL) {
+ return(NULL);
+ }
- if ((fin = fopen(STATUSFILE, "r")) == NULL)
- {
- perror(STATUSFILE);
- return 0;
+ while ((line = bb_get_chomped_line_from_file(list_stream)) != NULL) {
+ file_list = xrealloc(file_list, sizeof(char *) * (count + 2));
+ file_list[count] = line;
+ count++;
}
- if ((fout = fopen(STATUSFILE ".new", "w")) == NULL)
- {
- perror(STATUSFILE ".new");
- return 0;
+ fclose(list_stream);
+
+ if (count == 0) {
+ return(NULL);
+ } else {
+ file_list[count] = NULL;
+ return(file_list);
}
- if (getenv(udpkg_quiet) == NULL)
- printf("(Updating database...)\n");
- while (fgets(buf, BUFSIZE, fin) && !feof(fin))
- {
- buf[strlen(buf)-1] = 0; /* trim newline */
- /* If we see a package header, find out if it's a package
- * that we have processed. if so, we skip that block for
- * now (write it at the end).
- *
- * we also look at packages in the status cache and update
- * their status fields
- */
- if (strstr(buf, "Package: ") == buf)
- {
- for (pkg = pkgs; pkg != 0 && strncmp(buf + 9,
- pkg->package, strlen(buf) - 9)!=0;
- pkg = pkg->next) ;
-
- locpkg.package = buf+9;
- statpkg = tfind(&locpkg, &status, package_compare);
-
- /* note: statpkg should be non-zero, unless the status
- * file was changed while we are processing (no locking
- * is currently done...
- */
- if (statpkg != 0) statpkg = *(package_t **)statpkg;
- }
- if (pkg != 0) continue;
-
- if (strstr(buf, "Status: ") == buf && statpkg != 0)
- {
- snprintf(buf, sizeof(buf), "Status: %s",
- status_print(statpkg->status));
- }
- fputs(buf, fout);
- fputc('\n', fout);
- }
-
- // Print out packages we processed.
- for (pkg = pkgs; pkg != 0; pkg = pkg->next) {
- fprintf(fout, "Package: %s\nStatus: %s\n",
- pkg->package, status_print(pkg->status));
- if (pkg->depends)
- fprintf(fout, "Depends: %s\n", pkg->depends);
- if (pkg->provides)
- fprintf(fout, "Provides: %s\n", pkg->provides);
- if (pkg->installer_menu_item)
- fprintf(fout, "installer-menu-item: %i\n", pkg->installer_menu_item);
- if (pkg->description)
- fprintf(fout, "Description: %s\n", pkg->description);
- fputc('\n', fout);
- }
-
- fclose(fin);
- fclose(fout);
-
- r = rename(STATUSFILE, STATUSFILE ".bak");
- if (r == 0) r = rename(STATUSFILE ".new", STATUSFILE);
- return 0;
}
-/*
- * Main udpkg implementation routines
- */
+/* 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 match_flag;
+ int remove_flag = FALSE;
+ int i,j;
+
+ if (remove_names == NULL) {
+ return(FALSE);
+ }
+ for (i = 0; remove_names[i] != NULL; i++) {
+ match_flag = FALSE;
+ if (exclude_names != NULL) {
+ for (j = 0; exclude_names[j] != 0; j++) {
+ if (strcmp(remove_names[i], exclude_names[j]) == 0) {
+ match_flag = TRUE;
+ break;
+ }
+ }
+ }
+ if (!match_flag) {
+ if (lstat(remove_names[i], &path_stat) < 0) {
+ continue;
+ }
+ if (S_ISDIR(path_stat.st_mode)) {
+ if (rmdir(remove_names[i]) != -1) {
+ remove_flag = TRUE;
+ }
+ } else {
+ if (unlink(remove_names[i]) != -1) {
+ remove_flag = TRUE;
+ }
+ }
+ }
+ }
+ return(remove_flag);
+}
-#ifdef DODEBUG
-static int do_system(const char *cmd)
+static int run_package_script(const char *package_name, const char *script_type)
{
- DPRINTF("cmd is %s\n", cmd);
- return system(cmd);
+ struct stat path_stat;
+ char *script_path;
+ int result;
+
+ script_path = bb_xasprintf("/var/lib/dpkg/info/%s.%s", package_name, script_type);
+
+ /* If the file doesnt exist is isnt a fatal */
+ result = lstat(script_path, &path_stat) < 0 ? EXIT_SUCCESS : system(script_path);
+ free(script_path);
+ return(result);
}
-#else
-#define do_system(cmd) system(cmd)
-#endif
-static int is_file(const char *fn)
+static const char *all_control_files[] = {"preinst", "postinst", "prerm", "postrm",
+ "list", "md5sums", "shlibs", "conffiles", "config", "templates", NULL };
+
+static char **all_control_list(const char *package_name)
{
- struct stat statbuf;
+ unsigned short i = 0;
+ char **remove_files;
+
+ /* Create a list of all /var/lib/dpkg/info/<package> files */
+ remove_files = xzalloc(sizeof(all_control_files));
+ while (all_control_files[i]) {
+ remove_files[i] = bb_xasprintf("/var/lib/dpkg/info/%s.%s", package_name, all_control_files[i]);
+ i++;
+ }
- if (stat(fn, &statbuf) < 0) return 0;
- return S_ISREG(statbuf.st_mode);
+ return(remove_files);
}
-static int dpkg_doconfigure(package_t *pkg)
+static void free_array(char **array)
{
- int r;
- char postinst[1024];
- char buf[1024];
- DPRINTF("Configuring %s\n", pkg->package);
- pkg->status &= status_statusmask;
- snprintf(postinst, sizeof(postinst), "%s%s.postinst", infodir, pkg->package);
- if (is_file(postinst))
- {
- snprintf(buf, sizeof(buf), "%s configure", postinst);
- if ((r = do_system(buf)) != 0)
- {
- fprintf(stderr, "postinst exited with status %d\n", r);
- pkg->status |= status_statushalfconfigured;
- return 1;
+
+ if (array) {
+ unsigned short i = 0;
+ while (array[i]) {
+ free(array[i]);
+ i++;
}
+ free(array);
}
-
- pkg->status |= status_statusinstalled;
-
- return 0;
}
-static int dpkg_dounpack(package_t *pkg)
+/* 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(void)
{
- int r = 0;
- char *cwd, *p;
- FILE *infp, *outfp;
- char buf[1024], buf2[1024];
int i;
- char *adminscripts[] = { "prerm", "postrm", "preinst", "postinst",
- "conffiles", "md5sums", "shlibs",
- "templates" };
-
- DPRINTF("Unpacking %s\n", pkg->package);
-
- cwd = getcwd(0, 0);
- chdir("/");
- snprintf(buf, sizeof(buf), "ar -p %s data.tar.gz|zcat|tar -xf -", pkg->file);
- if (SYSTEM(buf) == 0)
- {
- /* Installs the package scripts into the info directory */
- for (i = 0; i < sizeof(adminscripts) / sizeof(adminscripts[0]);
- i++)
- {
- snprintf(buf, sizeof(buf), "%s%s/%s",
- DPKGCIDIR, pkg->package, adminscripts[i]);
- snprintf(buf2, sizeof(buf), "%s%s.%s",
- infodir, pkg->package, adminscripts[i]);
- if (copy_file(buf, buf2, TRUE, FALSE, FALSE) < 0)
- {
- fprintf(stderr, "Cannot copy %s to %s: %s\n",
- buf, buf2, strerror(errno));
- r = 1;
- break;
- }
- else
- {
- /* ugly hack to create the list file; should
- * probably do something more elegant
- *
- * why oh why does dpkg create the list file
- * so oddly...
- */
- snprintf(buf, sizeof(buf),
- "ar -p %s data.tar.gz|zcat|tar -tf -",
- pkg->file);
- snprintf(buf2, sizeof(buf2),
- "%s%s.list", infodir, pkg->package);
- if ((infp = popen(buf, "r")) == NULL ||
- (outfp = fopen(buf2, "w")) == NULL)
- {
- fprintf(stderr, "Cannot create %s\n",
- buf2);
- r = 1;
- break;
- }
- while (fgets(buf, sizeof(buf), infp) &&
- !feof(infp))
- {
- p = buf;
- if (*p == '.') p++;
- if (*p == '/' && *(p+1) == '\n')
- {
- *(p+1) = '.';
- *(p+2) = '\n';
- *(p+3) = 0;
- }
- if (p[strlen(p)-2] == '/')
- {
- p[strlen(p)-2] = '\n';
- p[strlen(p)-1] = 0;
- }
- fputs(p, outfp);
- }
- fclose(infp);
- fclose(outfp);
- }
- }
- pkg->status &= status_wantmask;
- pkg->status |= status_wantinstall;
- pkg->status &= status_flagmask;
- pkg->status |= status_flagok;
- pkg->status &= status_statusmask;
- if (r == 0)
- pkg->status |= status_statusunpacked;
- else
- pkg->status |= status_statushalfinstalled;
- }
- chdir(cwd);
- return r;
-}
-
-static int dpkg_doinstall(package_t *pkg)
-{
- DPRINTF("Installing %s\n", pkg->package);
- return (dpkg_dounpack(pkg) || dpkg_doconfigure(pkg));
-}
-
-static int dpkg_unpackcontrol(package_t *pkg)
-{
- int r = 1;
- char *cwd = 0;
- char *p;
- char buf[1024];
- FILE *f;
-
- p = strrchr(pkg->file, '/');
- if (p) p++; else p = pkg->file;
- p = pkg->package = strdup(p);
- while (*p != 0 && *p != '_' && *p != '.') p++;
- *p = 0;
-
- cwd = getcwd(0, 0);
- snprintf(buf, sizeof(buf), "%s%s", DPKGCIDIR, pkg->package);
- DPRINTF("dir = %s\n", buf);
- if (mkdir(buf, S_IRWXU) == 0 && chdir(buf) == 0)
- {
- snprintf(buf, sizeof(buf), "ar -p %s control.tar.gz|zcat|tar -xf -",
- pkg->file);
- if (SYSTEM(buf) == 0)
- {
- if ((f = fopen("control", "r")) != NULL) {
- control_read(f, pkg);
- r = 0;
+
+ printf(" Name Version\n");
+ printf("+++-==============-==============\n");
+
+ /* 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];
+
+ /* 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 int 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 int 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];
+ int return_value;
+
+ if ( noisy )
+ printf("Removing %s (%s) ...\n", package_name, package_version);
+
+ /* run prerm script */
+ return_value = run_package_script(package_name, "prerm");
+ if (return_value == -1) {
+ bb_error_msg_and_die("script failed, prerm failure");
}
- chdir(cwd);
- free(cwd);
- return r;
+ /* Create a list of files to remove, and a separate list of those to keep */
+ sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name);
+ remove_files = create_list(list_name);
+
+ sprintf(conffile_name, "/var/lib/dpkg/info/%s.conffiles", package_name);
+ exclude_files = create_list(conffile_name);
+
+ /* Some directories cant be removed straight away, so do multiple passes */
+ while (remove_file_array(remove_files, exclude_files));
+ 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(char*) * 3);
+ exclude_files[0] = bb_xstrdup(conffile_name);
+ exclude_files[1] = bb_xasprintf("/var/lib/dpkg/info/%s.postrm", package_name);
+
+ /* 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>.conffile to <package>.list */
+ rename(conffile_name, list_name);
+
+ /* Change package status */
+ set_status(status_num, "config-files", 3);
}
-static int dpkg_unpack(package_t *pkgs)
+static void purge_package(const unsigned int package_num)
{
- int r = 0;
- package_t *pkg;
- void *status = status_read();
-
- if (SYSTEM("rm -rf -- " DPKGCIDIR) != 0 ||
- mkdir(DPKGCIDIR, S_IRWXU) != 0)
- {
- perror("mkdir");
- return 1;
+ const char *package_name = name_hashtable[package_hashtable[package_num]->name];
+ const char *package_version = name_hashtable[package_hashtable[package_num]->version];
+ const unsigned int 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 */
+ if (run_package_script(package_name, "prerm") != 0) {
+ bb_error_msg_and_die("script failed, prerm failure");
}
-
- for (pkg = pkgs; pkg != 0; pkg = pkg->next)
- {
- dpkg_unpackcontrol(pkg);
- r = dpkg_dounpack(pkg);
- if (r != 0) break;
+
+ /* Create a list of files to remove */
+ sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name);
+ remove_files = create_list(list_name);
+
+ exclude_files = xzalloc(sizeof(char*));
+
+ /* Some directories cant be removed straight away, so do multiple passes */
+ while (remove_file_array(remove_files, exclude_files));
+ free_array(remove_files);
+
+ /* 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(exclude_files);
+
+ /* run postrm script */
+ if (run_package_script(package_name, "postrm") == -1) {
+ bb_error_msg_and_die("postrm fialure.. set status to what?");
}
- status_merge(status, pkgs);
- SYSTEM("rm -rf -- " DPKGCIDIR);
- return r;
+
+ /* Change package status */
+ set_status(status_num, "not-installed", 3);
}
-static int dpkg_configure(package_t *pkgs)
+static archive_handle_t *init_archive_deb_ar(const char *filename)
{
- int r = 0;
- void *found;
- package_t *pkg;
- void *status = status_read();
- for (pkg = pkgs; pkg != 0 && r == 0; pkg = pkg->next)
- {
- found = tfind(pkg, &status, package_compare);
- if (found == 0)
- {
- fprintf(stderr, "Trying to configure %s, but it is not installed\n", pkg->package);
- r = 1;
- }
- else
- {
- /* configure the package listed in the status file;
- * not pkg, as we have info only for the latter */
- r = dpkg_doconfigure(*(package_t **)found);
- }
+ 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 = bb_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.* */
+#ifdef CONFIG_FEATURE_DEB_TAR_GZ
+ llist_add_to(&(ar_handle->accept), "control.tar.gz");
+#endif
+#ifdef CONFIG_FEATURE_DEB_TAR_BZ2
+ llist_add_to(&(ar_handle->accept), "control.tar.bz2");
+#endif
+
+ /* Assign the tar handle as a subarchive of the ar handle */
+ ar_handle->sub_archive = tar_handle;
+
+ return;
+}
+
+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.* */
+#ifdef CONFIG_FEATURE_DEB_TAR_GZ
+ llist_add_to(&(ar_handle->accept), "data.tar.gz");
+#endif
+#ifdef CONFIG_FEATURE_DEB_TAR_BZ2
+ llist_add_to(&(ar_handle->accept), "data.tar.bz2");
+#endif
+
+ /* Assign the tar handle as a subarchive of the ar handle */
+ ar_handle->sub_archive = tar_handle;
+
+ return;
+}
+
+static char *deb_extract_control_file_to_buffer(archive_handle_t *ar_handle, llist_t *myaccept)
+{
+ ar_handle->sub_archive->action_data = data_extract_to_buffer;
+ ar_handle->sub_archive->accept = myaccept;
+ ar_handle->sub_archive->filter = filter_accept_list;
+
+ unpack_ar_archive(ar_handle);
+ close(ar_handle->src_fd);
+
+ return(ar_handle->sub_archive->buffer);
+}
+
+static void data_extract_all_prefix(archive_handle_t *archive_handle)
+{
+ char *name_ptr = archive_handle->file_header->name;
+
+ name_ptr += strspn(name_ptr, "./");
+ if (name_ptr[0] != '\0') {
+ archive_handle->file_header->name = bb_xasprintf("%s%s", archive_handle->buffer, name_ptr);
+ data_extract_all(archive_handle);
}
- status_merge(status, 0);
- return r;
+ return;
}
-static int dpkg_install(package_t *pkgs)
+static void unpack_package(deb_file_t *deb_file)
{
- package_t *p, *ordered = 0;
- void *status = status_read();
- if (SYSTEM("rm -rf -- " DPKGCIDIR) != 0 ||
- mkdir(DPKGCIDIR, S_IRWXU) != 0)
- {
- perror("mkdir");
- return 1;
+ const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name];
+ const unsigned int status_num = search_status_hashtable(package_name);
+ const unsigned int status_package_num = status_hashtable[status_num]->package;
+ char *info_prefix;
+ archive_handle_t *archive_handle;
+ FILE *out_stream;
+ llist_t *accept_list = NULL;
+ int i = 0;
+
+ /* If existing version, remove it first */
+ 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);
+ remove_package(status_package_num, 0);
+ } else {
+ printf("Unpacking %s (from %s) ...\n", package_name, deb_file->filename);
}
-
- /* Stage 1: parse all the control information */
- for (p = pkgs; p != 0; p = p->next)
- if (dpkg_unpackcontrol(p) != 0)
- {
- perror(p->file);
- /* force loop break, and prevents further ops */
- pkgs = 0;
- }
-
- /* Stage 2: resolve dependencies */
-#ifdef DODEPENDS
- ordered = depends_resolve(pkgs, status);
-#else
- ordered = pkgs;
-#endif
-
- /* Stage 3: install */
- for (p = ordered; p != 0; p = p->next)
- {
- p->status &= status_wantmask;
- p->status |= status_wantinstall;
-
- /* for now the flag is always set to ok... this is probably
- * not what we want
- */
- p->status &= status_flagmask;
- p->status |= status_flagok;
- if (dpkg_doinstall(p) != 0)
- {
- perror(p->file);
- }
+ /* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */
+ info_prefix = bb_xasprintf("/var/lib/dpkg/info/%s.", package_name);
+ archive_handle = init_archive_deb_ar(deb_file->filename);
+ init_archive_deb_control(archive_handle);
+
+ while(all_control_files[i]) {
+ char *c = bb_xasprintf("./%s", all_control_files[i]);
+ llist_add_to(&accept_list, c);
+ i++;
}
-
- if (ordered != 0)
- status_merge(status, pkgs);
- SYSTEM("rm -rf -- " DPKGCIDIR);
- return 0;
+ archive_handle->sub_archive->accept = accept_list;
+ archive_handle->sub_archive->filter = filter_accept_list;
+ archive_handle->sub_archive->action_data = data_extract_all_prefix;
+ archive_handle->sub_archive->buffer = info_prefix;
+ archive_handle->sub_archive->flags |= ARCHIVE_EXTRACT_UNCONDITIONAL;
+ unpack_ar_archive(archive_handle);
+
+ /* Run the preinst prior to extracting */
+ if (run_package_script(package_name, "preinst") != 0) {
+ /* when preinst returns exit code != 0 then quit installation process */
+ bb_error_msg_and_die("subprocess pre-installation script returned error.");
+ }
+
+ /* 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->sub_archive->action_data = data_extract_all_prefix;
+ archive_handle->sub_archive->buffer = "/";
+ archive_handle->sub_archive->flags |= ARCHIVE_EXTRACT_UNCONDITIONAL;
+ unpack_ar_archive(archive_handle);
+
+ /* Create the list file */
+ strcat(info_prefix, "list");
+ out_stream = bb_xfopen(info_prefix, "w");
+ while (archive_handle->sub_archive->passed) {
+ /* the leading . has been stripped by data_extract_all_prefix already */
+ fputs(archive_handle->sub_archive->passed->data, out_stream);
+ fputc('\n', out_stream);
+ archive_handle->sub_archive->passed = archive_handle->sub_archive->passed->link;
+ }
+ fclose(out_stream);
+
+ /* change status */
+ set_status(status_num, "install", 1);
+ set_status(status_num, "unpacked", 3);
+
+ free(info_prefix);
}
-static int dpkg_remove(package_t *pkgs)
+static void configure_package(deb_file_t *deb_file)
{
- package_t *p;
- void *status = status_read();
- for (p = pkgs; p != 0; p = p->next)
- {
+ 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 */
+ if (run_package_script(package_name, "postinst") != 0) {
+ /* TODO: handle failure gracefully */
+ bb_error_msg_and_die("postrm failure.. set status to what?");
}
- status_merge(status, 0);
- return 0;
+ /* Change status to reflect success */
+ set_status(status_num, "install", 1);
+ set_status(status_num, "installed", 3);
}
-extern int dpkg_main(int argc, char **argv)
-{
- char opt = 0;
- char *s;
- package_t *p, *packages = NULL;
- char *cwd = getcwd(0, 0);
- while (*++argv)
- {
- if (**argv == '-') {
- /* Nasty little hack to "parse" long options. */
- s = *argv;
- while (*s == '-')
- s++;
- opt=s[0];
- }
- else
- {
- p = (package_t *)malloc(sizeof(package_t));
- memset(p, 0, sizeof(package_t));
- if (**argv == '/')
- p->file = *argv;
- else if (opt != 'c')
- {
- p->file = malloc(strlen(cwd) + strlen(*argv) + 2);
- sprintf(p->file, "%s/%s", cwd, *argv);
+int dpkg_main(int argc, char **argv)
+{
+ deb_file_t **deb_file = NULL;
+ status_node_t *status_node;
+ int opt;
+ int package_num;
+ int dpkg_opt = 0;
+ int deb_count = 0;
+ int state_status;
+ int status_num;
+ int i;
+
+ while ((opt = getopt(argc, argv, "CF:ilPru")) != -1) {
+ switch (opt) {
+ case 'C': // equivalent to --configure in official dpkg
+ dpkg_opt |= dpkg_opt_configure;
+ dpkg_opt |= dpkg_opt_package_name;
+ break;
+ case 'F': // equivalent to --force in official dpkg
+ if (strcmp(optarg, "depends") == 0) {
+ dpkg_opt |= dpkg_opt_force_ignore_depends;
+ }
+ break;
+ case 'i':
+ dpkg_opt |= dpkg_opt_install;
+ dpkg_opt |= dpkg_opt_filename;
+ break;
+ case 'l':
+ dpkg_opt |= dpkg_opt_list_installed;
+ break;
+ case 'P':
+ dpkg_opt |= dpkg_opt_purge;
+ dpkg_opt |= dpkg_opt_package_name;
+ break;
+ case 'r':
+ dpkg_opt |= dpkg_opt_remove;
+ dpkg_opt |= dpkg_opt_package_name;
+ break;
+ case 'u': /* Equivalent to --unpack in official dpkg */
+ dpkg_opt |= dpkg_opt_unpack;
+ dpkg_opt |= dpkg_opt_filename;
+ break;
+ default:
+ bb_show_usage();
+ }
+ }
+ /* check for non-otion argument if expected */
+ if ((dpkg_opt == 0) || ((argc == optind) && !(dpkg_opt && dpkg_opt_list_installed))) {
+ 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 (dpkg_opt & dpkg_opt_list_installed) {
+ list_packages();
+ return(EXIT_SUCCESS);
+ }
+
+ /* Read arguments and store relevant info in structs */
+ while (optind < argc) {
+ /* deb_count = nb_elem - 1 and we need nb_elem + 1 to allocate terminal node [NULL pointer] */
+ deb_file = xrealloc(deb_file, sizeof(deb_file_t *) * (deb_count + 2));
+ deb_file[deb_count] = (deb_file_t *) xzalloc(sizeof(deb_file_t));
+ if (dpkg_opt & dpkg_opt_filename) {
+ archive_handle_t *archive_handle;
+ llist_t *control_list = NULL;
+
+ /* Extract the control file */
+ llist_add_to(&control_list, "./control");
+ archive_handle = init_archive_deb_ar(argv[optind]);
+ 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("Couldnt extract control file");
+ }
+ deb_file[deb_count]->filename = bb_xstrdup(argv[optind]);
+ package_num = fill_package_struct(deb_file[deb_count]->control_file);
+
+ if (package_num == -1) {
+ bb_error_msg("Invalid control file in %s", argv[optind]);
+ optind++;
+ continue;
+ }
+ deb_file[deb_count]->package = (unsigned int) package_num;
+
+ /* Add the package to the status hashtable */
+ if ((dpkg_opt & dpkg_opt_unpack) || (dpkg_opt & dpkg_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 = (status_node_t *) 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 (dpkg_opt & dpkg_opt_package_name) {
+ deb_file[deb_count]->package = search_package_hashtable(
+ search_name_hashtable(argv[optind]),
+ 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\n", argv[optind]);
}
- else {
- p->package = strdup(*argv);
+ 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 (dpkg_opt & dpkg_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 (dpkg_opt & dpkg_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);
}
- p->next = packages;
- packages = p;
}
-
+ deb_count++;
+ optind++;
}
- switch (opt)
- {
- case 'i': return dpkg_install(packages); break;
- case 'r': return dpkg_remove(packages); break;
- case 'u': return dpkg_unpack(packages); break;
- case 'c': return dpkg_configure(packages); break;
+ deb_file[deb_count] = NULL;
+
+ /* Check that the deb file arguments are installable */
+ if ((dpkg_opt & dpkg_opt_force_ignore_depends) != dpkg_opt_force_ignore_depends) {
+ if (!check_deps(deb_file, 0, deb_count)) {
+ bb_error_msg_and_die("Dependency check failed");
+ }
}
- /* if it falls through to here, some of the command line options were
- wrong */
- usage(dpkg_usage);
- return 0;
-}
\ No newline at end of file
+ /* TODO: install or remove packages in the correct dependency order */
+ for (i = 0; i < deb_count; i++) {
+ /* Remove or purge packages */
+ if (dpkg_opt & dpkg_opt_remove) {
+ remove_package(deb_file[i]->package, 1);
+ }
+ else if (dpkg_opt & dpkg_opt_purge) {
+ purge_package(deb_file[i]->package);
+ }
+ else if (dpkg_opt & dpkg_opt_unpack) {
+ unpack_package(deb_file[i]);
+ }
+ else if (dpkg_opt & dpkg_opt_install) {
+ unpack_package(deb_file[i]);
+ /* package is configured in second pass below */
+ }
+ else if (dpkg_opt & dpkg_opt_configure) {
+ configure_package(deb_file[i]);
+ }
+ }
+ /* configure installed packages */
+ if (dpkg_opt & dpkg_opt_install) {
+ for (i = 0; i < deb_count; i++)
+ configure_package(deb_file[i]);
+ }
+
+ write_status_file(deb_file);
+
+ 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++) {
+ if (package_hashtable[i] != NULL) {
+ free_package(package_hashtable[i]);
+ }
+ }
+
+ for (i = 0; i < STATUS_HASH_PRIME; i++) {
+ free(status_hashtable[i]);
+ }
+
+ return(EXIT_SUCCESS);
+}
+
projects / oweals / busybox.git / blobdiff