* Mini dpkg implementation for busybox.
* This is not meant as a replacemnt 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
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include "unarchive.h"
#include "busybox.h"
/* NOTE: If you vary HASH_PRIME sizes be aware,
{
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) {
}
}
name_hashtable[probe_address] = xstrdup(key);
-
return(probe_address);
}
int tmp_int;
int ver_num1;
int ver_num2;
+ int ret;
if (version1 == NULL) {
version1 = xstrdup("");
}
- if (version2 != NULL) {
+ if (version2 == NULL) {
version2 = xstrdup("");
}
upstream_len1 = strlen(version1);
free(name1_char);
free(name2_char);
if (tmp_int != 0) {
- return(tmp_int);
+ ret = tmp_int;
+ goto cleanup_version_compare_part;
}
/* Compare digits */
free(name1_char);
free(name2_char);
if (ver_num1 < ver_num2) {
- return(-1);
+ ret = -1;
+ goto cleanup_version_compare_part;
}
else if (ver_num1 > ver_num2) {
- return(1);
+ ret = 1;
+ goto cleanup_version_compare_part;
}
}
- return(0);
+ ret = 0;
+cleanup_version_compare_part:
+ return(ret);
}
/* if ver1 < ver2 return -1,
void free_package(common_node_t *node)
{
- int i;
- if (node != NULL) {
+ unsigned short i;
+ if (node) {
for (i = 0; i < node->num_of_edges; i++) {
- if (node->edge[i] != NULL) {
+ if (node->edge[i]) {
free(node->edge[i]);
}
}
- if (node->edge != NULL) {
+ if (node->edge) {
free(node->edge);
}
- if (node != NULL) {
- free(node);
- }
+ free(node);
}
}
{
common_node_t *new_node = (common_node_t *) xcalloc(1, sizeof(common_node_t));
- char *field_name = xmalloc(sizeof(char *));
- char *field_value = xmalloc(sizeof(char *));
+ 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) {
- field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value);
+ 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 !!
add_split_dependencies(new_node, field_value, EDGE_ENHANCES);
}
fill_package_struct_cleanup:
- free(field_name);
- free(field_value);
+ if (field_name) {
+ free(field_name);
+ }
+ if (field_value) {
+ free(field_value);
+ }
}
+
if (new_node->version == search_name_hashtable("unknown")) {
free_package(new_node);
return(-1);
new_status = (char *) xmalloc(want_len + flag_len + status_len + 3);
sprintf(new_status, "%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;
}
/* Update previously known packages */
while ((control_buffer = fgets_str(old_status_file, "\n\n")) != NULL) {
- tmp_string = strstr(control_buffer, "Package:") + 8;
+ if ((tmp_string = strstr(control_buffer, "Package:")) == NULL) {
+ continue;
+ }
+
+ tmp_string += 8;
tmp_string += strspn(tmp_string, " \n\t");
package_name = xstrndup(tmp_string, strcspn(tmp_string, "\n\0"));
write_flag = FALSE;
}
else if (strcmp("config-files", name_hashtable[state_status]) == 0) {
/* only change the status line */
-// buffer_length = strlen(control_buffer);
while (1) {
char *field_name;
char *field_value;
}
}
/* If the package from the status file wasnt handle above, do it now*/
- if (write_flag == FALSE) {
+ if (! write_flag) {
fprintf(new_status_file, "%s\n\n", control_buffer);
}
int state_status;
int state_flag;
int state_want;
- unsigned int status_package_num;
int i = deb_start;
- int j, k;
+ int j;
/* Check for conflicts
* TODO: TEST if conflicts with other packages to be installed
}
/* Check conflicts */
- for (i = 0; i < conflicts_num; i++) {
- /* Check for conflicts */
- for (j = 0; j < STATUS_HASH_PRIME; j++) {
- if (status_hashtable[j] == NULL) {
- continue;
- }
- state_flag = get_status(j, 2);
- state_status = get_status(j, 3);
- if ((state_status != search_name_hashtable("installed"))
- && (state_flag != search_name_hashtable("want-install"))) {
- continue;
- }
- status_package_num = status_hashtable[j]->package;
- for (k = 0; k < package_hashtable[status_package_num]->num_of_edges; k++) {
- const edge_t *package_edge = package_hashtable[status_package_num]->edge[k];
- if (package_edge->type != EDGE_CONFLICTS) {
- continue;
- }
- if (package_edge->name != package_hashtable[conflicts[i]]->name) {
- continue;
+ 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];
+ const unsigned int package_num =
+ search_package_hashtable(package_edge->name,
+ package_edge->version, package_edge->operator);
+
+ if (package_edge->type == EDGE_CONFLICTS) {
+ int result = 0;
+ if (package_hashtable[package_num] != NULL) {
+ status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
+ state_status = get_status(status_num, 3);
+ state_flag = get_status(status_num, 1);
+
+ result = (state_status == search_name_hashtable("installed")) ||
+ (state_flag == search_name_hashtable("want-install"));
+
+ if (result) {
+ result = test_version(package_hashtable[deb_file[i]->package]->version,
+ package_edge->version, package_edge->operator);
+ }
}
- /* There is a conflict against the package name
- * check if version conflict as well */
- if (test_version(package_hashtable[deb_file[i]->package]->version,
- package_edge->version, package_edge->operator)) {
- error_msg_and_die("Package %s conflict with %s",
- name_hashtable[package_hashtable[deb_file[i]->package]->name],
- name_hashtable[package_hashtable[status_package_num]->name]);
+
+ if (result) {
+ error_msg_and_die("Package %s conflicts with %s",
+ name_hashtable[package_node->name],
+ name_hashtable[package_edge->name]);
}
}
}
- }
+ i++;
+ }
+
/* Check dependendcies */
i = 0;
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]);
+ state_status = get_status(status_num, 3);
+ state_want = get_status(status_num, 1);
+
+ if (state_status == search_name_hashtable("installed")) {
+ i++;
+ continue;
+ }
+
for (j = 0; j < package_hashtable[deb_file[i]->package]->num_of_edges; j++) {
const edge_t *package_edge = package_node->edge[j];
- const unsigned int package_num = search_package_hashtable(package_edge->name,
- package_edge->version, package_edge->operator);
+ unsigned int package_num;
+
+ package_num = search_package_hashtable(package_edge->name, package_edge->version, package_edge->operator);
- status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
- state_status = get_status(status_num, 3);
- state_want = get_status(status_num, 1);
switch (package_edge->type) {
case(EDGE_PRE_DEPENDS):
- case(EDGE_OR_PRE_DEPENDS):
+ case(EDGE_OR_PRE_DEPENDS): {
+ int result=1;
/* It must be already installed */
/* NOTE: This is untested, nothing apropriate in my status file */
- if ((package_hashtable[package_num] == NULL) || (state_status != search_name_hashtable("installed"))) {
+ if (package_hashtable[package_num] != NULL) {
+ status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
+ state_status = get_status(status_num, 3);
+ state_want = get_status(status_num, 1);
+ result = (state_status != search_name_hashtable("installed"));
+ }
+
+ if (result) {
error_msg_and_die("Package %s pre-depends on %s, but it is not installed",
name_hashtable[package_node->name],
name_hashtable[package_edge->name]);
}
break;
+ }
case(EDGE_DEPENDS):
- case(EDGE_OR_DEPENDS):
+ case(EDGE_OR_DEPENDS): {
+ int result=1;
+ if (package_hashtable[package_num] != NULL) {
+ status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]);
+ state_status = get_status(status_num, 3);
+ state_want = get_status(status_num, 1);
+ result=(state_status != search_name_hashtable("installed")) && (state_want != search_name_hashtable("want-install"));
+ }
/* It must be already installed, or to be installed */
- if ((package_hashtable[package_num] == NULL) ||
- ((state_status != search_name_hashtable("installed")) &&
- (state_want != search_name_hashtable("want_install")))) {
+ if (result) {
error_msg_and_die("Package %s depends on %s, but it is not installed, or flaged to be installed",
name_hashtable[package_node->name],
name_hashtable[package_edge->name]);
}
break;
+ }
}
}
i++;
}
+ free(conflicts);
return(TRUE);
}
char **create_list(const char *filename)
{
FILE *list_stream;
- char **file_list = xmalloc(sizeof(char *));
+ char **file_list = NULL;
char *line = NULL;
- char *last_char;
int length = 0;
int count = 0;
/* dont use [xw]fopen here, handle error ourself */
list_stream = fopen(filename, "r");
if (list_stream == NULL) {
- *file_list = NULL;
- return(file_list);
+ return(NULL);
}
+
while (getline(&line, &length, list_stream) != -1) {
- file_list = xrealloc(file_list, sizeof(char *) * (length + 1));
- last_char = last_char_is(line, '\n');
- if (last_char) {
- *last_char = '\0';
- }
+ file_list = xrealloc(file_list, sizeof(char *) * (count + 2));
+ chomp(line);
file_list[count] = xstrdup(line);
- free(line);
count++;
- length = 0;
}
fclose(list_stream);
+ free(line);
if (count == 0) {
return(NULL);
{
struct stat path_stat;
char *script_path;
+ int result;
script_path = xmalloc(strlen(package_name) + strlen(script_type) + 21);
sprintf(script_path, "/var/lib/dpkg/info/%s.%s", package_name, script_type);
/* If the file doesnt exist is isnt a fatal */
if (lstat(script_path, &path_stat) < 0) {
- return(EXIT_SUCCESS);
+ result = EXIT_SUCCESS;
} else {
- return(system(script_path));
+ result = system(script_path);
}
+ free(script_path);
+ return(result);
}
-void all_control_list(char **remove_files, const char *package_name)
+char **all_control_list(const char *package_name)
{
- const char *all_extensions[11] = {"preinst", "postinst", "prerm", "postrm",
+ const char *extensions[11] = {"preinst", "postinst", "prerm", "postrm",
"list", "md5sums", "shlibs", "conffiles", "config", "templates", NULL };
- int i;
+ unsigned short i = 0;
+ char **remove_files;
/* Create a list of all /var/lib/dpkg/info/<package> files */
- for(i = 0; i < 10; i++) {
- remove_files[i] = xmalloc(strlen(package_name) + strlen(all_extensions[i]) + 21);
- sprintf(remove_files[i], "/var/lib/dpkg/info/%s.%s", package_name, all_extensions[i]);
+ remove_files = malloc(sizeof(char *) * 11);
+ while (extensions[i]) {
+ remove_files[i] = xmalloc(strlen(package_name) + strlen(extensions[i]) + 21);
+ sprintf(remove_files[i], "/var/lib/dpkg/info/%s.%s", package_name, extensions[i]);
+ i++;
}
remove_files[10] = NULL;
+
+ return(remove_files);
+}
+
+void free_array(char **array)
+{
+
+ if (array) {
+ unsigned short i = 0;
+ while (array[i]) {
+ free(array[i]);
+ i++;
+ }
+ free(array);
+ }
+}
+
+/* This function lists information on the installed packages. It loops through
+ * the status_hashtable to retrieve the info. This results in smaller code than
+ * scanning the status file. The resulting list, however, is unsorted.
+ */
+void list_packages(void)
+{
+ 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++) {
+
+ 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);
+ }
+ }
}
void remove_package(const unsigned int package_num)
printf("Removing %s ...\n", package_name);
/* run prerm script */
- return_value = run_package_script(package_name, "prem");
+ return_value = run_package_script(package_name, "prerm");
if (return_value == -1) {
error_msg_and_die("script failed, prerm failure");
}
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) == TRUE);
-
- /* Create a list of all /var/lib/dpkg/info/<package> files */
- remove_files = xmalloc(11);
- all_control_list(remove_files, package_name);
+ 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 = xmalloc(sizeof(char*) * 3);
sprintf(exclude_files[1], "/var/lib/dpkg/info/%s.postrm", package_name);
exclude_files[2] = NULL;
+ /* 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);
char list_name[strlen(package_name) + 25];
/* run prerm script */
- if (run_package_script(package_name, "prerm") == -1) {
+ if (run_package_script(package_name, "prerm") != 0) {
error_msg_and_die("script failed, prerm failure");
}
sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name);
remove_files = create_list(list_name);
- exclude_files = xmalloc(1);
+ exclude_files = xmalloc(sizeof(char*));
exclude_files[0] = NULL;
/* Some directories cant be removed straight away, so do multiple passes */
- while (remove_file_array(remove_files, exclude_files) == TRUE);
+ 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 = xmalloc(11);
- all_control_list(remove_files, package_name);
+ 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) {
{
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]->status;
+ const unsigned int status_package_num = status_hashtable[status_num]->package;
FILE *out_stream;
char *info_prefix;
}
/* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */
- info_prefix = (char *) xmalloc(sizeof(package_name) + 20 + 4 + 1);
+ info_prefix = (char *) xmalloc(strlen(package_name) + 20 + 4 + 2);
sprintf(info_prefix, "/var/lib/dpkg/info/%s.", package_name);
- deb_extract(deb_file->filename, stdout, (extract_quiet | extract_control_tar_gz | extract_all_to_fs), info_prefix, NULL);
+ deb_extract(deb_file->filename, stdout, (extract_quiet | extract_control_tar_gz | extract_all_to_fs | extract_unconditional), info_prefix, NULL);
+
+ /* Run the preinst prior to extracting */
+ if (run_package_script(package_name, "preinst") != 0) {
+ /* when preinst returns exit code != 0 then quit installation process */
+ error_msg_and_die("subprocess pre-installation script returned error.");
+ }
/* Extract data.tar.gz to the root directory */
- deb_extract(deb_file->filename, stdout, (extract_quiet | extract_data_tar_gz | extract_all_to_fs), "/", NULL);
+ deb_extract(deb_file->filename, stdout, (extract_quiet | extract_data_tar_gz | extract_all_to_fs | extract_unconditional), "/", NULL);
/* Create the list file */
strcat(info_prefix, "list");
out_stream = xfopen(info_prefix, "w");
- deb_extract(deb_file->filename, out_stream, (extract_quiet | extract_data_tar_gz | extract_list), NULL, NULL);
+ deb_extract(deb_file->filename, out_stream, (extract_quiet | extract_data_tar_gz | extract_list), "/", NULL);
fclose(out_stream);
/* change status */
set_status(status_num, "install", 1);
set_status(status_num, "unpacked", 3);
+
+ free(info_prefix);
}
void configure_package(deb_file_t *deb_file)
const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name];
const char *package_version = name_hashtable[package_hashtable[deb_file->package]->version];
const int status_num = search_status_hashtable(package_name);
- int return_value;
printf("Setting up %s (%s)\n", package_name, package_version);
- /* Run the preinst prior to extracting */
- return_value = run_package_script(package_name, "postinst");
- if (return_value == -1) {
+ /* Run the postinst script */
+ if (run_package_script(package_name, "postinst") != 0) {
/* TODO: handle failure gracefully */
error_msg_and_die("postrm failure.. set status to what?");
}
set_status(status_num, "installed", 3);
}
-extern int dpkg_main(int argc, char **argv)
+int dpkg_main(int argc, char **argv)
{
deb_file_t **deb_file = NULL;
status_node_t *status_node;
- char opt = 0;
+ int opt;
int package_num;
int dpkg_opt = 0;
int deb_count = 0;
break;
case 'l':
dpkg_opt |= dpkg_opt_list_installed;
+ break;
case 'P':
dpkg_opt |= dpkg_opt_purge;
dpkg_opt |= dpkg_opt_package_name;
show_usage();
}
}
-
- if ((argc == optind) || (dpkg_opt == 0)) {
+ /* check for non-otion argument if expected */
+ if ((dpkg_opt == 0) || ((argc == optind) && !(dpkg_opt && dpkg_opt_list_installed))) {
show_usage();
- }
+ }
- puts("(Reading database ... xxxxx files and directories installed.)");
+/* 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 */
- deb_file = xmalloc(sizeof(deb_file_t));
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 *) xmalloc(sizeof(deb_file_t));
if (dpkg_opt & dpkg_opt_filename) {
deb_file[deb_count]->filename = xstrdup(argv[optind]);
if ((dpkg_opt & dpkg_opt_unpack) || (dpkg_opt & dpkg_opt_install)) {
status_node = (status_node_t *) xmalloc(sizeof(status_node_t));
status_node->package = deb_file[deb_count]->package;
- /* use 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");
-
+ /* 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]);
- status_hashtable[status_num] = status_node;
+ /* If no previous entry was found initialise a new entry */
+ if ((status_hashtable[status_num] == NULL) ||
+ (status_hashtable[status_num]->status == 0)) {
+ /* reinstreq isnt changed to "ok" until the package control info
+ * is written to the status file*/
+ status_node->status = search_name_hashtable("want-install reinstreq not-installed");
+ status_hashtable[status_num] = status_node;
+ } else {
+ status_hashtable[status_num]->status = search_name_hashtable("want-install reinstreq not-installed");
+ }
}
}
else if (dpkg_opt & dpkg_opt_package_name) {
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++) {
if (name_hashtable[i] != NULL) {
free(name_hashtable[i]);
}
for (i = 0; i < PACKAGE_HASH_PRIME; i++) {
- free_package(package_hashtable[i]);
+ if (package_hashtable[i] != NULL) {
+ free_package(package_hashtable[i]);
+ }
}
for (i = 0; i < STATUS_HASH_PRIME; i++) {
}
}
- return(EXIT_FAILURE);
+ return(EXIT_SUCCESS);
}
projects / oweals / busybox.git / blobdiff