int conffile_has_been_modified(conffile_t * conffile)
{
char *md5sum;
char *filename = conffile->name;
char *root_filename;
int ret = 1;
if (conffile->value == NULL) {
opkg_msg(NOTICE, "Conffile %s has no md5sum.\n", conffile->name);
return 1;
}
root_filename = root_filename_alloc(filename);
md5sum = file_md5sum_alloc(root_filename);
if (md5sum && (ret = strcmp(md5sum, conffile->value))) {
opkg_msg(INFO, "Conffile %s:\n\told md5=%s\n\tnew md5=%s\n",
conffile->name, md5sum, conffile->value);
}
free(root_filename);
if (md5sum)
free(md5sum);
return ret;
}
int conffile_has_been_modified(ipkg_conf_t *conf, conffile_t *conffile)
{
char *md5sum;
char *filename = conffile->name;
char *root_filename;
int ret;
if (conffile->value == NULL) {
ipkg_message(conf, IPKG_NOTICE, "%s: conffile %s has no md5sum\n", __FUNCTION__, conffile->name);
return 1;
}
root_filename = root_filename_alloc(conf, filename);
md5sum = file_md5sum_alloc(root_filename);
ret = strcmp(md5sum, conffile->value);
if (ret) {
ipkg_message(conf, IPKG_NOTICE, "%s: conffile %s: \t\nold md5=%s \t\nnew md5=%s\n", __FUNCTION__,
conffile->name, md5sum, conffile->value);
}
free(root_filename);
free(md5sum);
return ret;
}
int recursively_install(char* pkg_name, char* pkg_version, char* install_root_name, char* link_to_root, char* overlay_path, int is_upgrade, int overwrite_config, int overwrite_other_package_files, char* tmp_dir, opkg_conf* conf, string_map* package_data, string_map* install_called_pkgs)
{
int err=0;
/* variables not allocated in this function, do not need to be freed */
string_map* install_pkg_data = get_package_with_version(package_data, pkg_name, pkg_version);
char* src_file_path = get_string_map_element(install_pkg_data, "Install-File-Location");
char* src_id = get_string_map_element(install_pkg_data, "Source-ID");
char* pkg_filename = get_string_map_element(install_pkg_data, "Filename");
string_map* pkg_dependencies = get_string_map_element(install_pkg_data, "Required-Depends");
char* install_root_path = get_string_map_element(conf->dest_names, install_root_name);
char* link_root_path = link_to_root != NULL && safe_strcmp(link_to_root, install_root_name) != 0 ? get_string_map_element(conf->dest_names, link_to_root) : NULL;
char* base_url = NULL;
/* variables that may need to be freed */
char* pkg_dest = NULL;
string_map* files_to_link = NULL;
char* info_dir = NULL;
char* control_name_prefix = NULL;
char* list_file_name = NULL;
string_map* conf_files = NULL;
string_map* copied_conf_files = NULL;
int install_root_len = strlen(install_root_path);
char* fs_terminated_install_root = install_root_path[install_root_len-1] == '/' ? strdup(install_root_path) : dynamic_strcat(2, install_root_path, "/");
int overlay_root_len;
char* fs_terminated_overlay_root = NULL;
if(overlay_path != NULL)
{
overlay_root_len = strlen(overlay_path);
fs_terminated_overlay_root = overlay_path[overlay_root_len-1] == '/' ? strdup(overlay_path) : dynamic_strcat(2, overlay_path, "/");
}
else
{
fs_terminated_overlay_root = strdup(fs_terminated_install_root);
}
int link_root_len;
char* fs_terminated_link_root = NULL;
if(link_root_path != NULL)
{
link_root_len = strlen(link_root_path);
fs_terminated_link_root = link_root_path[link_root_len-1] == '/' ? strdup(link_root_path) : dynamic_strcat(2, link_root_path, "/");
}
set_string_map_element(install_called_pkgs, pkg_name, strdup("D"));
if(pkg_dependencies != NULL)
{
//recurse
unsigned long num_deps;
char** deps = get_string_map_keys(pkg_dependencies, &num_deps);
int dep_index;
for(dep_index=0; err == 0 && dep_index < num_deps ; dep_index++)
{
if(get_string_map_element(install_called_pkgs, deps[dep_index]) == NULL )
{
char** dep_def = get_string_map_element(pkg_dependencies, deps[dep_index]);
int is_current;
char* matching_version;
string_map* dep_pkg = get_package_current_or_latest_matching(package_data, deps[dep_index], dep_def, &is_current, &matching_version);
if(dep_pkg != NULL)
{
char* dep_status = get_string_map_element(dep_pkg, "Status");
if(strstr(dep_status, " half-installed") != NULL)
{
err = recursively_install(deps[dep_index], matching_version, install_root_name, link_to_root, overlay_path, is_upgrade, overwrite_config, overwrite_other_package_files, tmp_dir, conf, package_data, install_called_pkgs);
}
}
else
{
err = 1;
}
}
}
}
if(install_root_path == NULL || ( src_id == NULL && install_pkg_data == NULL) || (pkg_filename == NULL && install_pkg_data == NULL) )
{
//sanity check
err = 1;
}
if(err == 0)
{
printf("Preparing to install package %s...\n", pkg_name);
}
if(err == 0 && src_file_path == NULL)
{
//determine source url
string_map* src_lists[2] = { conf->gzip_sources, conf->plain_sources };
int src_list_index;
for(src_list_index=0; src_list_index < 2 && base_url == NULL; src_list_index++)
{
base_url = (char*)get_string_map_element(src_lists[src_list_index], src_id);
}
err = base_url == NULL ? 1 : err;
if(err == 1)
{
fprintf(stderr, "ERROR: Could determine download URL for package %s\n", pkg_name);
}
}
if(err == 0 && src_file_path == NULL)
{
//download package
printf("\tDownloading...\n");
char* src_url = dynamic_strcat(3, base_url, "/", pkg_filename);
pkg_dest = dynamic_strcat(3, tmp_dir, "/", pkg_name);
FILE* package_file = fopen(pkg_dest, "w");
if(package_file != NULL)
{
err = write_url_to_stream(src_url, "gpkg", NULL, package_file, NULL);
fclose(package_file);
}
else
{
err = 1;
}
if(err == 1)
{
fprintf(stderr, "ERROR: Could not download package %s\n", pkg_name);
}
free(src_url);
}
if(err == 0 && src_file_path != NULL)
{
pkg_dest = strdup(src_file_path);
}
if(err == 0 && src_file_path == NULL)
{
//check md5sum
char* md5sum = file_md5sum_alloc(pkg_dest);
char* expected_md5sum = (char*)get_string_map_element(install_pkg_data, "MD5Sum");
//printf("md5sum = %s\n", md5sum);
//printf("package md5sum = %s\n", (char*)get_string_map_element(install_pkg_data, "MD5Sum"));
if(md5sum == NULL || expected_md5sum == NULL)
{
fprintf(stderr, "ERROR: Expected MD5Sum for %s not specified, cannot verify package\n", pkg_name);
err = 1;
}
else if (safe_strcmp(md5sum, expected_md5sum) != 0)
{
fprintf(stderr, "ERROR: MD5Sum mismatch for %s package\n", pkg_name);
fprintf(stderr, " Expected: %s\n", expected_md5sum);
fprintf(stderr, " Downloaded: %s\n\n", md5sum);
err = 1;
}
else
{
printf("\tDownloaded %s successfully.\n\tInstalling %s...\n", pkg_name, pkg_name);
}
if(md5sum != NULL) { free(md5sum); }
}
if(err == 0)
{
// Extract list file contaiing list of files to install
info_dir = dynamic_strcat(2, fs_terminated_overlay_root, "usr/lib/opkg/info");
control_name_prefix = dynamic_strcat(4, info_dir, "/", pkg_name, ".");
list_file_name = dynamic_strcat(4, info_dir, "/", pkg_name, ".list");
mkdir_p(info_dir, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH );
FILE* list_file = fopen(list_file_name, "w");
deb_extract( pkg_dest,
list_file,
extract_quiet | extract_data_tar_gz | extract_list,
NULL,
NULL,
&err);
fclose(list_file);
if(err)
{
rm_r(list_file_name);
fprintf(stderr, "ERROR: could not extract file list from packge %s.\n", pkg_name);
fprintf(stderr, " package file may be corrupt\n\n");
}
}
if(err == 0)
{
//extract control files
deb_extract( pkg_dest,
stderr,
extract_control_tar_gz | extract_all_to_fs| extract_preserve_date | extract_unconditional,
control_name_prefix,
NULL,
&err);
if(err)
{
fprintf(stderr, "ERROR: could not extract control files from packge %s.\n", pkg_name);
fprintf(stderr, " package file may be corrupt\n\n");
}
}
if(err == 0)
{
//check for file conflicts & correct list file to contain real root name in file paths
unsigned long num_list_lines;
char** list_file_lines = get_file_lines(list_file_name, &num_list_lines);
char* conf_file_path = dynamic_strcat(4, info_dir, "/", pkg_name, ".conffiles");
if(path_exists(conf_file_path))
{
unsigned long num_conf_lines;
char** conf_file_lines = get_file_lines(conf_file_path, &num_conf_lines);
int conf_line_index;
conf_files = initialize_string_map(1);
for(conf_line_index=0; conf_line_index < num_conf_lines; conf_line_index++)
{
char* adjusted_conf_path = dynamic_strcat(2, fs_terminated_install_root, conf_file_lines[conf_line_index] + 1);
set_string_map_element(conf_files, adjusted_conf_path, strdup("D"));
free(adjusted_conf_path);
}
free_null_terminated_string_array(conf_file_lines);
}
free(conf_file_path);
FILE* list_file = fopen(list_file_name, "w");
int line_index;
for(line_index=0; line_index < num_list_lines && (!err) ; line_index++)
{
int line_len = strlen( list_file_lines[line_index] );
if(line_len > 2)
{
if(list_file_lines[line_index][0] == '.' && list_file_lines[line_index][1] == '/' && list_file_lines[line_index][line_len-1] != '/')
{
char* adjusted_file_path = dynamic_strcat(2, fs_terminated_install_root, list_file_lines[line_index] + 2);
int is_conf_file = conf_files != NULL ?
(get_string_map_element(conf_files, adjusted_file_path) != NULL ? 1 : 0) :
0;
if(strcmp(pkg_name, "opkg") == 0 && strcmp(list_file_lines[line_index], "./bin/opkg") == 0 && path_exists("/bin/opkg") == PATH_IS_SYMLINK)
{
//very special case: we're installing opkg, and here all the preliminary checks have already been passed
//remove symlink placeholder to gpkg from /bin/opkg if it exists
rm_r("/bin/opkg");
}
err = path_exists(adjusted_file_path) && is_conf_file == 0 && overwrite_other_package_files == 0 ? 1 : 0;
if(err)
{
fprintf(stderr, "ERROR: file '%s'\n", adjusted_file_path);
fprintf(stderr, " from package %s already exists.\n\n", pkg_name);
}
else
{
fprintf(list_file, "%s\n", adjusted_file_path);
if(link_root_path != NULL)
{
char* link_to_path = dynamic_strcat(2, fs_terminated_link_root, list_file_lines[line_index] + 2);
files_to_link = files_to_link == NULL ? initialize_string_map(1) : files_to_link;
set_string_map_element(files_to_link, adjusted_file_path, link_to_path);
//don't free link_to_path, should be freed with files_to_link map
}
if(is_conf_file && path_exists(adjusted_file_path) && overwrite_config == 0)
{
char* tmp_conf_path = dynamic_strcat(2, tmp_dir, adjusted_file_path);
cp(adjusted_file_path, tmp_conf_path);
copied_conf_files = copied_conf_files == NULL ? initialize_string_map(1) : copied_conf_files;
set_string_map_element(copied_conf_files, adjusted_file_path, tmp_conf_path);
//don't free tmp_conf_path, should be freed with copied_conf_files map
}
}
free(adjusted_file_path);
}
}
}
fclose(list_file);
if(list_file_lines != NULL) { free_null_terminated_string_array(list_file_lines); }
}
if(err == 0)
{
//run preinst
err = run_script_if_exists(install_root_path, link_root_path, pkg_name, "preinst", (is_upgrade ? "upgrade" : "install") );
}
if(err == 0)
{
//extract package files
deb_extract( pkg_dest,
stderr,
extract_data_tar_gz | extract_all_to_fs| extract_preserve_date| extract_unconditional,
fs_terminated_overlay_root,
NULL,
&err);
if(err)
{
fprintf(stderr, "ERROR: could not extract application files from packge %s.\n", pkg_name);
fprintf(stderr, " package file may be corrupt\n\n");
}
//move any conf files back
if(copied_conf_files != NULL)
{
unsigned long num_conf_paths;
char** conf_paths = get_string_map_keys(copied_conf_files, &num_conf_paths);
int conf_index;
for(conf_index=0; conf_index < num_conf_paths; conf_index++)
{
char* tmp_conf_path = get_string_map_element(copied_conf_files, conf_paths[conf_index]);
cp(tmp_conf_path, conf_paths[conf_index]);
}
destroy_string_map(copied_conf_files, DESTROY_MODE_FREE_VALUES, &num_conf_paths);
if(conf_paths != NULL ) { free_null_terminated_string_array(conf_paths); }
copied_conf_files = NULL;
}
}
if(err == 0 && files_to_link != NULL)
{
unsigned long num_files;
char** real_files = get_string_map_keys(files_to_link, &num_files);
int file_index;
if(num_files > 0)
{
char* link_file_name = dynamic_strcat(4, info_dir, "/", pkg_name, ".linked");
FILE* link_file = fopen(link_file_name, "w");
for(file_index=0; link_file != NULL && file_index < num_files; file_index++)
{
char* link_path = get_string_map_element(files_to_link, real_files[file_index]);
if(!path_exists(link_path))
{
int sym_success;
mkdir_p(link_path, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH );
rm_r(link_path);
sym_success = symlink(real_files[file_index], link_path);
fprintf(link_file, "%s\n", link_path);
}
}
if(link_file != NULL) { fclose(link_file); }
free(link_file_name);
}
destroy_string_map(files_to_link, DESTROY_MODE_FREE_VALUES, &num_files);
free_null_terminated_string_array(real_files);
files_to_link = NULL;
}
if(err == 0)
{
//run postinst
int warn = run_script_if_exists(install_root_path, link_root_path, pkg_name, "postinst", (is_upgrade ? "upgrade" : "install") );
if(warn != 0)
{
fprintf(stderr, "Warning: postinstall script failed for package %s.\n", pkg_name);
}
}
if(err == 0)
{
// remove downloaded package file in tmp dir & print success
if(src_file_path == NULL) { rm_r(pkg_dest); }
printf("\tSuccessfully installed %s.\n", pkg_name);
}
//cleanup
unsigned long num_destroyed;
free_if_not_null(pkg_dest);
free_if_not_null(info_dir);
free_if_not_null(control_name_prefix);
free_if_not_null(list_file_name);
free_if_not_null(fs_terminated_install_root);
free_if_not_null(fs_terminated_overlay_root);
free_if_not_null(fs_terminated_link_root);
if(files_to_link != NULL) { destroy_string_map(files_to_link, DESTROY_MODE_FREE_VALUES, &num_destroyed); }
if(conf_files != NULL) { destroy_string_map(conf_files, DESTROY_MODE_FREE_VALUES, &num_destroyed); }
if(copied_conf_files!= NULL){ destroy_string_map(copied_conf_files, DESTROY_MODE_FREE_VALUES, &num_destroyed); }
return err;
}
