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pacman/lib/libalpm/util.c

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/*
* util.c
*
* Copyright (c) 2002-2005 by Judd Vinet <jvinet@zeroflux.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <dirent.h>
#include <time.h>
#include <syslog.h>
#include <zlib.h>
#include <libtar.h>
/* pacman */
#include "log.h"
#include "util.h"
#include "alpm.h"
/* borrowed and modified from Per Liden's pkgutils (http://crux.nu) */
long _alpm_gzopen_frontend(char *pathname, int oflags, int mode)
{
char* gzoflags;
int fd;
gzFile gzf;
switch (oflags & O_ACCMODE) {
case O_WRONLY:
gzoflags = "w";
break;
case O_RDONLY:
gzoflags = "r";
break;
case O_RDWR:
default:
errno = EINVAL;
return -1;
}
if((fd = open(pathname, oflags, mode)) == -1) {
return -1;
}
if((oflags & O_CREAT) && fchmod(fd, mode)) {
return -1;
}
if(!(gzf = gzdopen(fd, gzoflags))) {
errno = ENOMEM;
return -1;
}
return (long)gzf;
}
/* does the same thing as 'mkdir -p' */
int _alpm_makepath(char *path)
{
char *orig, *str, *ptr;
char full[PATH_MAX] = "";
mode_t oldmask;
oldmask = umask(0000);
orig = strdup(path);
str = orig;
while((ptr = strsep(&str, "/"))) {
if(strlen(ptr)) {
struct stat buf;
strcat(full, "/");
strcat(full, ptr);
if(stat(full, &buf)) {
if(mkdir(full, 0755)) {
free(orig);
umask(oldmask);
return(1);
}
}
}
}
free(orig);
umask(oldmask);
return(0);
}
int _alpm_copyfile(char *src, char *dest)
{
FILE *in, *out;
size_t len;
char buf[4097];
in = fopen(src, "r");
if(in == NULL) {
return(1);
}
out = fopen(dest, "w");
if(out == NULL) {
return(1);
}
while((len = fread(buf, 1, 4096, in))) {
fwrite(buf, 1, len, out);
}
fclose(in);
fclose(out);
return(0);
}
/* Convert a string to uppercase
*/
char *_alpm_strtoupper(char *str)
{
char *ptr = str;
while(*ptr) {
(*ptr) = toupper(*ptr);
ptr++;
}
return str;
}
/* Trim whitespace and newlines from a string
*/
char *_alpm_strtrim(char *str)
{
char *pch = str;
if(*str == '\0') {
/* string is empty, so we're done. */
return(str);
}
while(isspace(*pch)) {
pch++;
}
if(pch != str) {
memmove(str, pch, (strlen(pch) + 1));
}
/* check if there wasn't anything but whitespace in the string. */
if(*str == '\0') {
return(str);
}
pch = (char*)(str + (strlen(str) - 1));
while(isspace(*pch)) {
pch--;
}
*++pch = '\0';
return(str);
}
/* A cheap grep for text files, returns 1 if a substring
* was found in the text file fn, 0 if it wasn't
*/
int _alpm_grep(const char *fn, const char *needle)
{
FILE *fp;
if((fp = fopen(fn, "r")) == NULL) {
return(0);
}
while(!feof(fp)) {
char line[1024];
fgets(line, 1024, fp);
if(feof(fp)) {
continue;
}
if(strstr(line, needle)) {
fclose(fp);
return(1);
}
}
fclose(fp);
return(0);
}
/* Create a lock file
*/
int _alpm_lckmk(char *file)
{
int fd, count = 0;
while((fd = open(file, O_WRONLY | O_CREAT | O_EXCL, 0000)) == -1 && errno == EACCES) {
if(++count < 1) {
sleep(1);
} else {
return(-1);
}
}
return(fd > 0 ? 0 : -1);
return(0);
}
/* Remove a lock file
*/
int _alpm_lckrm(char *file)
{
return(unlink(file) == -1);
}
int _alpm_unpack(char *archive, const char *prefix, const char *fn)
{
TAR *tar = NULL;
char expath[PATH_MAX];
tartype_t gztype = {
(openfunc_t) _alpm_gzopen_frontend,
(closefunc_t)gzclose,
(readfunc_t) gzread,
(writefunc_t)gzwrite
};
/* open the .tar.gz package */
if(tar_open(&tar, archive, &gztype, O_RDONLY, 0, TAR_GNU) == -1) {
perror(archive);
return(1);
}
while(!th_read(tar)) {
if(fn && strcmp(fn, th_get_pathname(tar))) {
if(TH_ISREG(tar) && tar_skip_regfile(tar)) {
char errorstr[255];
snprintf(errorstr, 255, "bad tar archive: %s", archive);
perror(errorstr);
tar_close(tar);
return(1);
}
continue;
}
snprintf(expath, PATH_MAX, "%s/%s", prefix, th_get_pathname(tar));
if(tar_extract_file(tar, expath)) {
fprintf(stderr, "could not extract %s: %s\n", th_get_pathname(tar), strerror(errno));
}
if(fn) break;
}
tar_close(tar);
return(0);
}
/* does the same thing as 'rm -rf' */
int _alpm_rmrf(char *path)
{
int errflag = 0;
struct dirent *dp;
DIR *dirp;
char name[PATH_MAX];
extern int errno;
if(!unlink(path)) {
return(0);
} else {
if(errno == ENOENT) {
return(0);
} else if(errno == EPERM) {
/* fallthrough */
} else if(errno == EISDIR) {
/* fallthrough */
} else if(errno == ENOTDIR) {
return(1);
} else {
/* not a directory */
return(1);
}
if((dirp = opendir(path)) == (DIR *)-1) {
return(1);
}
for(dp = readdir(dirp); dp != NULL; dp = readdir(dirp)) {
if(dp->d_ino) {
sprintf(name, "%s/%s", path, dp->d_name);
if(strcmp(dp->d_name, "..") && strcmp(dp->d_name, ".")) {
errflag += _alpm_rmrf(name);
}
}
}
closedir(dirp);
if(rmdir(path)) {
errflag++;
}
return(errflag);
}
return(0);
}
int _alpm_log_action(unsigned char usesyslog, FILE *f, char *fmt, ...)
{
char msg[1024];
va_list args;
va_start(args, fmt);
vsnprintf(msg, 1024, fmt, args);
va_end(args);
if(usesyslog) {
syslog(LOG_WARNING, "%s", msg);
}
if(f) {
time_t t;
struct tm *tm;
t = time(NULL);
tm = localtime(&t);
fprintf(f, "[%02d/%02d/%02d %02d:%02d] %s\n", tm->tm_mon+1, tm->tm_mday,
tm->tm_year-100, tm->tm_hour, tm->tm_min, msg);
}
return(0);
}
int _alpm_ldconfig(char *root)
{
char line[PATH_MAX];
struct stat buf;
snprintf(line, PATH_MAX, "%setc/ld.so.conf", root);
if(!stat(line, &buf)) {
snprintf(line, PATH_MAX, "%ssbin/ldconfig", root);
if(!stat(line, &buf)) {
char cmd[PATH_MAX];
snprintf(cmd, PATH_MAX, "%s -r %s", line, root);
system(cmd);
}
}
return(0);
}
int _alpm_runscriptlet(char *root, char *installfn, char *script, char *ver, char *oldver)
{
char scriptfn[PATH_MAX];
char cmdline[PATH_MAX];
char tmpdir[PATH_MAX] = "";
char *scriptpath;
struct stat buf;
return(0);
if(stat(installfn, &buf)) {
/* not found */
return(0);
}
if(!strcmp(script, "pre_upgrade") || !strcmp(script, "pre_install")) {
snprintf(tmpdir, PATH_MAX, "%stmp/", root);
if(stat(tmpdir, &buf)) {
_alpm_makepath(tmpdir);
}
snprintf(tmpdir, PATH_MAX, "%stmp/pacman-XXXXXX", root);
if(mkdtemp(tmpdir) == NULL) {
perror("error creating temp directory");
return(1);
}
_alpm_unpack(installfn, tmpdir, ".INSTALL");
snprintf(scriptfn, PATH_MAX, "%s/.INSTALL", tmpdir);
/* chop off the root so we can find the tmpdir in the chroot */
scriptpath = scriptfn + strlen(root) - 1;
return(0);
} else {
strncpy(scriptfn, installfn, PATH_MAX-1);
/* chop off the root so we can find the tmpdir in the chroot */
scriptpath = scriptfn + strlen(root) - 1;
}
if(!_alpm_grep(scriptfn, script)) {
/* script not found in scriptlet file */
if(strlen(tmpdir) && _alpm_rmrf(tmpdir)) {
/* ORE
_alpm_log(PM_LOG_WARNING, "could not remove tmpdir %s", tmpdir);*/
}
return(0);
}
/* ORE
_alpm_log(PM_LOG_FLOW2, "Executing %s script...", script);*/
if(oldver) {
snprintf(cmdline, PATH_MAX, "echo \"umask 0022; source %s %s %s %s\" | chroot %s /bin/sh",
scriptpath, script, ver, oldver, root);
} else {
snprintf(cmdline, PATH_MAX, "echo \"umask 0022; source %s %s %s\" | chroot %s /bin/sh",
scriptpath, script, ver, root);
}
/* ORE
_alpm_log(PM_LOG_FLOW2, "%s", cmdline);*/
system(cmdline);
if(strlen(tmpdir) && _alpm_rmrf(tmpdir)) {
/* ORE
_alpm_log(PM_LOG_WARNING, "could not remove tmpdir %s", tmpdir);*/
}
return(0);
}
/* vim: set ts=2 sw=2 noet: */
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