* 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,
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) {
+ if (field_name == NULL) {
goto fill_package_struct_cleanup; // Oh no, the dreaded goto statement !!
}
- if (strcmp(*field_name, "Package") == 0) {
- new_node->name = search_name_hashtable(*field_value);
+ if (strcmp(field_name, "Package") == 0) {
+ new_node->name = search_name_hashtable(field_value);
}
- else if (strcmp(*field_name, "Version") == 0) {
- new_node->version = search_name_hashtable(*field_value);
+ else if (strcmp(field_name, "Version") == 0) {
+ new_node->version = search_name_hashtable(field_value);
}
- else if (strcmp(*field_name, "Pre-Depends") == 0) {
- add_split_dependencies(new_node, *field_value, EDGE_PRE_DEPENDS);
+ else if (strcmp(field_name, "Pre-Depends") == 0) {
+ add_split_dependencies(new_node, field_value, EDGE_PRE_DEPENDS);
}
- else if (strcmp(*field_name, "Depends") == 0) {
- add_split_dependencies(new_node, *field_value, EDGE_DEPENDS);
+ else if (strcmp(field_name, "Depends") == 0) {
+ add_split_dependencies(new_node, field_value, EDGE_DEPENDS);
}
- else if (strcmp(*field_name, "Replaces") == 0) {
- add_split_dependencies(new_node, *field_value, EDGE_REPLACES);
+ else if (strcmp(field_name, "Replaces") == 0) {
+ add_split_dependencies(new_node, field_value, EDGE_REPLACES);
}
- else if (strcmp(*field_name, "Provides") == 0) {
- add_split_dependencies(new_node, *field_value, EDGE_PROVIDES);
+ else if (strcmp(field_name, "Provides") == 0) {
+ add_split_dependencies(new_node, field_value, EDGE_PROVIDES);
}
- else if (strcmp(*field_name, "Conflicts") == 0) {
- add_split_dependencies(new_node, *field_value, EDGE_CONFLICTS);
+ else if (strcmp(field_name, "Conflicts") == 0) {
+ add_split_dependencies(new_node, field_value, EDGE_CONFLICTS);
}
- else if (strcmp(*field_name, "Suggests") == 0) {
- add_split_dependencies(new_node, *field_value, EDGE_SUGGESTS);
+ else if (strcmp(field_name, "Suggests") == 0) {
+ add_split_dependencies(new_node, field_value, EDGE_SUGGESTS);
}
- else if (strcmp(*field_name, "Recommends") == 0) {
- add_split_dependencies(new_node, *field_value, EDGE_RECOMMENDS);
+ else if (strcmp(field_name, "Recommends") == 0) {
+ add_split_dependencies(new_node, field_value, EDGE_RECOMMENDS);
}
- else if (strcmp(*field_name, "Enhances") == 0) {
- add_split_dependencies(new_node, *field_value, EDGE_ENHANCES);
+ else if (strcmp(field_name, "Enhances") == 0) {
+ add_split_dependencies(new_node, field_value, EDGE_ENHANCES);
}
fill_package_struct_cleanup:
- if (*field_name) {
- free(*field_name);
+ if (field_name) {
+ free(field_name);
}
- if (*field_value) {
- free(*field_value);
+ if (field_value) {
+ free(field_value);
}
}
- free(field_name);
- free(field_value);
if (new_node->version == search_name_hashtable("unknown")) {
free_package(new_node);
/* 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;
}
}
/* 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++;
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) {
- free(script_path);
- return(EXIT_SUCCESS);
+ result = EXIT_SUCCESS;
} else {
- free(script_path);
- 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
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 */
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;
}
/* 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) {
free(deb_file[i]->filename);
free(deb_file[i]);
}
+
free(deb_file);
for (i = 0; i < NAME_HASH_PRIME; 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