/*
* Mini dpkg implementation for busybox.
- * This is not meant as a replacemnt for dpkg
+ * 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
*
* This program is free software; you can redistribute it and/or modify
*/
/*
- * Known difference between busybox dpkg and the official dpkg that i dont
+ * 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.
* int's and chaos is assured, 16381 is the max prime for 14 bit field
*/
-/* NAME_HASH_PRIME, Stores package names and versions,
+/* 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
-char *name_hashtable[NAME_HASH_PRIME + 1];
+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,
unsigned int num_of_edges:14;
edge_t **edge;
} common_node_t;
-common_node_t *package_hashtable[PACKAGE_HASH_PRIME + 1];
+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 leaway here */
+ * 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;
-status_node_t *status_hashtable[STATUS_HASH_PRIME + 1];
+static status_node_t *status_hashtable[STATUS_HASH_PRIME + 1];
-/* Even numbers are for 'extras', like ored dependecies or null */
+/* Even numbers are for 'extras', like ored dependencies or null */
enum edge_type_e {
EDGE_NULL = 0,
EDGE_PRE_DEPENDS = 1,
} deb_file_t;
-void make_hash(const char *key, unsigned int *start, unsigned int *decrement, const int hash_prime)
+static void make_hash(const char *key, unsigned int *start, unsigned int *decrement, const int hash_prime)
{
unsigned long int hash_num = key[0];
int len = strlen(key);
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, dont want to shift data to where it has
+ * 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));
+ 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));
}
/* this adds the key to the hash table */
-int search_name_hashtable(const char *key)
+static int search_name_hashtable(const char *key)
{
unsigned int probe_address = 0;
unsigned int probe_decrement = 0;
/* this DOESNT add the key to the hashtable
* TODO make it consistent with search_name_hashtable
*/
-unsigned int search_status_hashtable(const char *key)
+static unsigned int search_status_hashtable(const char *key)
{
unsigned int probe_address = 0;
unsigned int probe_decrement = 0;
}
/* Need to rethink version comparison, maybe the official dpkg has something i can use ? */
-int version_compare_part(const char *version1, const char *version2)
+static int version_compare_part(const char *version1, const char *version2)
{
int upstream_len1 = 0;
int upstream_len2 = 0;
* if ver1 = ver2 return 0,
* if ver1 > ver2 return 1,
*/
-int version_compare(const unsigned int ver1, const unsigned int ver2)
+static int version_compare(const unsigned int ver1, const unsigned int ver2)
{
char *ch_ver1 = name_hashtable[ver1];
char *ch_ver2 = name_hashtable[ver2];
return(version_compare_part(deb_ver1, deb_ver2));
}
-int test_version(const unsigned int version1, const unsigned int version2, const unsigned int operator)
+static int test_version(const unsigned int version1, const unsigned int version2, const unsigned int operator)
{
const int version_result = version_compare(version1, version2);
switch(operator) {
}
-int search_package_hashtable(const unsigned int name, const unsigned int version, const unsigned int operator)
+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;
/*
* 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 provining package.
+ * the package_hashtable for the providing package.
*
* needle is the index into name_hashtable of the package we are
* looking for.
* 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.
*/
-int search_for_provides(int needle, int start_at) {
+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++) {
/*
* Add an edge to a node
*/
-void add_edge_to_node(common_node_t *node, edge_t *edge)
+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));
* field contains the number of EDGE nodes which follow as part of
* this alternative.
*/
-void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned int edge_type)
+static void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned int edge_type)
{
char *line = bb_xstrdup(whole_line);
char *line2;
} 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);
}
/* Skip leading ' ' or '(' */
version += strspn(field2, " ");
version += strspn(version, "(");
- /* Calculate length of any operator charactors */
+ /* Calculate length of any operator characters */
offset_ch = strspn(version, "<=>");
/* Determine operator */
if (offset_ch > 0) {
return;
}
-void free_package(common_node_t *node)
+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]);
}
- if ( node->edge )
- free(node->edge);
+ free(node->edge);
free(node);
}
}
-unsigned int fill_package_struct(char *control_buffer)
+static unsigned int fill_package_struct(char *control_buffer)
{
+ 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 *) xcalloc(1, sizeof(common_node_t));
- const char *field_names[] = { "Package", "Version", "Pre-Depends", "Depends",
- "Replaces", "Provides", "Conflicts", "Suggests", "Recommends", "Enhances", 0};
char *field_name;
char *field_value;
int field_start = 0;
goto fill_package_struct_cleanup; /* Oh no, the dreaded goto statement ! */
}
- field_num = compare_string_array(field_names, field_name);
+ field_num = compare_string_array(field_names, field_name);
switch(field_num) {
case 0: /* Package */
new_node->name = search_name_hashtable(field_value);
}
/* if num = 1, it returns the want status, 2 returns flag, 3 returns status */
-unsigned int get_status(const unsigned int status_node, const int num)
+static unsigned int get_status(const unsigned int status_node, const int num)
{
char *status_string = name_hashtable[status_hashtable[status_node]->status];
char *state_sub_string;
for (i = 1; i < num; i++) {
/* skip past a word */
status_string += strcspn(status_string, " ");
- /* skip past the seperating spaces */
+ /* skip past the separating spaces */
status_string += strspn(status_string, " ");
}
len = strcspn(status_string, " \n\0");
return(state_sub_num);
}
-void set_status(const unsigned int status_node_num, const char *new_value, const int position)
+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);
return;
}
-const char *describe_status(int status_num) {
+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";
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") )
}
-void index_status_file(const char *filename)
+static void index_status_file(const char *filename)
{
FILE *status_file;
char *control_buffer;
}
#endif
-void write_buffer_no_status(FILE *new_status_file, const char *control_buffer)
+static void write_buffer_no_status(FILE *new_status_file, const char *control_buffer)
{
char *name;
char *value;
}
/* This could do with a cleanup */
-void write_status_file(deb_file_t **deb_file)
+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");
}
tmp_string += 8;
- tmp_string += strspn(tmp_string, " \n\t");
+ 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:");
fclose(new_status_file);
- /* Create a seperate backfile to dpkg */
+ /* Create a separate backfile to dpkg */
if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) {
- struct stat stat_buf;
+ struct stat stat_buf;
if (stat("/var/lib/dpkg/status", &stat_buf) == 0) {
bb_error_msg_and_die("Couldnt create backup status file");
}
- /* Its ok if renaming the status file fails becasue status
+ /* 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");
}
}
}
-/* This function returns TRUE if the given package can statisfy a
+/* This function returns TRUE if the given package can satisfy a
* dependency of type depend_type.
*
- * A pre-depends is statisfied only if a package is already installed,
+ * 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.
*/
-int package_satisfies_dependency(int package, int depend_type)
+static int package_satisfies_dependency(int package, int depend_type)
{
int status_num = search_status_hashtable(name_hashtable[package_hashtable[package]->name]);
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");
+ 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;
}
-int check_deps(deb_file_t **deb_file, int deb_start, int dep_max_count)
+static int check_deps(deb_file_t **deb_file, int deb_start, int dep_max_count)
{
int *conflicts = NULL;
int conflicts_num = 0;
const edge_t *package_edge = package_node->edge[j];
if (package_edge->type == EDGE_CONFLICTS) {
- const unsigned int package_num =
+ const unsigned int package_num =
search_package_hashtable(package_edge->name,
- package_edge->version,
- package_edge->operator);
+ 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]);
}
}
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;
+ 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
/* 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.
+ * case there are no dependencies to check.
*/
if ( status_hashtable[status_num] == NULL ) continue;
* things which are broken but unrelated to the
* packages that are currently being installed
*/
- if (state_status == search_name_hashtable("installed"))
- continue;
+ if (state_status == search_name_hashtable("installed"))
+ continue;
#endif
- /* This code is tested only for EDGE_DEPENDS, sine I
+ /* 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 */
+ 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 */
+ } else if ( number_of_alternatives == 0 ) { /* not in the middle of an EDGE_OR_ list */
number_of_alternatives = 1;
root_of_alternatives = NULL;
}
* this edge is the right type.
*
* EDGE_DEPENDS == OR_DEPENDS -1
- * EDGE_PRE_DEPENDS == OR_PRE_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 \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 )
+
+ if ( result == 0 )
break;
}
}
if (result && number_of_alternatives == 0) {
if ( root_of_alternatives )
bb_error_msg_and_die(
- "Package %s %sdepends on %s, "
+ "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
+ else
bb_error_msg_and_die(
- "Package %s %sdepends on %s, which %s\n",
+ "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],
/* we've found a package which
* satisfies the dependency,
* so skip over the rest of
- * the alternatives.
+ * the alternatives.
*/
j += number_of_alternatives;
number_of_alternatives = 0;
return(TRUE);
}
-char **create_list(const char *filename)
+static char **create_list(const char *filename)
{
FILE *list_stream;
char **file_list = NULL;
char *line = NULL;
int count = 0;
- /* dont use [xw]fopen here, handle error ourself */
+ /* don't use [xw]fopen here, handle error ourself */
list_stream = fopen(filename, "r");
if (list_stream == NULL) {
return(NULL);
}
/* maybe i should try and hook this into remove_file.c somehow */
-int remove_file_array(char **remove_names, char **exclude_names)
+static int remove_file_array(char **remove_names, char **exclude_names)
{
struct stat path_stat;
int match_flag;
return(remove_flag);
}
-int run_package_script(const char *package_name, const char *script_type)
+static int run_package_script(const char *package_name, const char *script_type)
{
struct stat path_stat;
char *script_path;
return(result);
}
-const char *all_control_files[] = {"preinst", "postinst", "prerm", "postrm",
+static const char *all_control_files[] = {"preinst", "postinst", "prerm", "postrm",
"list", "md5sums", "shlibs", "conffiles", "config", "templates", NULL };
-char **all_control_list(const char *package_name)
+static char **all_control_list(const char *package_name)
{
unsigned short i = 0;
char **remove_files;
/* Create a list of all /var/lib/dpkg/info/<package> files */
- remove_files = malloc(sizeof(all_control_files));
+ remove_files = xmalloc(sizeof(all_control_files));
while (all_control_files[i]) {
remove_files[i] = xmalloc(strlen(package_name) + strlen(all_control_files[i]) + 21);
sprintf(remove_files[i], "/var/lib/dpkg/info/%s.%s", package_name, all_control_files[i]);
return(remove_files);
}
-void free_array(char **array)
+static void free_array(char **array)
{
-
+
if (array) {
unsigned short i = 0;
while (array[i]) {
/* 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.
+ * scanning the status file. The resulting list, however, is unsorted.
*/
-void list_packages(void)
+static void list_packages(void)
{
- int i;
+ int i;
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++) {
const char *name_str; /* package name */
const char *vers_str; /* version */
char s1, s2; /* status abbreviations */
- int spccnt; /* space count */
+ 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);
}
}
}
-void remove_package(const unsigned int package_num, int noisy)
+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];
char conffile_name[package_name_length + 30];
int return_value;
- if ( noisy )
+ if ( noisy )
printf("Removing %s (%s) ...\n", package_name, package_version);
/* run prerm script */
bb_error_msg_and_die("script failed, prerm failure");
}
- /* Create a list of files to remove, and a seperate list of those to keep */
+ /* 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);
set_status(status_num, "config-files", 3);
}
-void purge_package(const unsigned int package_num)
+static void purge_package(const unsigned int package_num)
{
const char *package_name = name_hashtable[package_hashtable[package_num]->name];
const char *package_version = name_hashtable[package_hashtable[package_num]->version];
{
archive_handle_t *ar_handle;
- /* Setup an ar archive handle that refers to the gzip sub archive */
+ /* 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);
+ return(ar_handle);
}
static void init_archive_deb_control(archive_handle_t *ar_handle)
tar_handle = init_handle();
tar_handle->src_fd = ar_handle->src_fd;
- /* We dont care about data.tar.* or debian-binary, just control.tar.* */
+ /* We don't care about data.tar.* or debian-binary, just control.tar.* */
#ifdef CONFIG_FEATURE_DEB_TAR_GZ
ar_handle->accept = llist_add_to(NULL, "control.tar.gz");
#endif
/* Assign the tar handle as a subarchive of the ar handle */
ar_handle->sub_archive = tar_handle;
- return;
+ return;
}
static void init_archive_deb_data(archive_handle_t *ar_handle)
tar_handle = init_handle();
tar_handle->src_fd = ar_handle->src_fd;
- /* We dont care about control.tar.* or debian-binary, just data.tar.* */
+ /* We don't care about control.tar.* or debian-binary, just data.tar.* */
#ifdef CONFIG_FEATURE_DEB_TAR_GZ
ar_handle->accept = llist_add_to(NULL, "data.tar.gz");
#endif
/* Assign the tar handle as a subarchive of the ar handle */
ar_handle->sub_archive = tar_handle;
- return;
+ 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);
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);
/* Create the list file */
strcat(info_prefix, "list");
- out_stream = bb_xfopen(info_prefix, "w");
+ 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);
free(info_prefix);
}
-void configure_package(deb_file_t *deb_file)
+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];
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;
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] */
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;
projects / oweals / busybox.git / blobdiff