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pacman/lib/libalpm/db.c
Aurelien Foret 58a7e85534 - db_write: add support to write both local and sync entries 
- code cleanup
2006-02-16 21:02:39 +00:00

609 lines
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/*
* db.c
*
* Copyright (c) 2002-2006 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 <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#ifdef CYGWIN
#include <limits.h> /* PATH_MAX */
#endif
/* pacman */
#include "log.h"
#include "util.h"
#include "group.h"
#include "cache.h"
#include "db.h"
#include "alpm.h"
/* Open a database and return a pmdb_t handle */
pmdb_t *db_open(char *dbpath, char *treename, int mode)
{
pmdb_t *db;
if(dbpath == NULL || treename == NULL) {
return(NULL);
}
_alpm_log(PM_LOG_DEBUG, "opening database '%s'", treename);
MALLOC(db, sizeof(pmdb_t));
MALLOC(db->path, strlen(dbpath)+strlen(treename)+2);
sprintf(db->path, "%s/%s", dbpath, treename);
db->dir = opendir(db->path);
if(db->dir == NULL) {
if(mode & DB_O_CREATE) {
_alpm_log(PM_LOG_WARNING, "could not open database '%s' -- try creating it", treename);
if(mkdir(db->path, 0755) == 0) {
db->dir = opendir(db->path);
}
}
if(!(mode & DB_O_CREATE) || db->dir == NULL) {
FREE(db->path);
FREE(db);
return(NULL);
}
}
STRNCPY(db->treename, treename, DB_TREENAME_LEN);
db->pkgcache = NULL;
db->grpcache = NULL;
return(db);
}
void db_close(pmdb_t *db)
{
if(db == NULL) {
return;
}
_alpm_log(PM_LOG_DEBUG, "closing database '%s'", db->treename);
if(db->dir) {
closedir(db->dir);
db->dir = NULL;
}
FREE(db->path);
db_free_pkgcache(db);
db_free_grpcache(db);
free(db);
return;
}
void db_rewind(pmdb_t *db)
{
if(db == NULL || db->dir == NULL) {
return;
}
rewinddir(db->dir);
}
pmpkg_t *db_scan(pmdb_t *db, char *target, unsigned int inforeq)
{
struct dirent *ent = NULL;
struct stat sbuf;
char path[PATH_MAX];
char name[PKG_FULLNAME_LEN];
char *ptr = NULL;
int found = 0;
pmpkg_t *pkg;
if(db == NULL) {
return(NULL);
}
if(target != NULL) {
/* search for a specific package (by name only) */
db_rewind(db);
while(!found && (ent = readdir(db->dir)) != NULL) {
if(!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, "..")) {
continue;
}
STRNCPY(name, ent->d_name, PKG_FULLNAME_LEN);
/* stat the entry, make sure it's a directory */
snprintf(path, PATH_MAX, "%s/%s", db->path, name);
if(stat(path, &sbuf) || !S_ISDIR(sbuf.st_mode)) {
continue;
}
/* truncate the string at the second-to-last hyphen, */
/* which will give us the package name */
if((ptr = rindex(name, '-'))) {
*ptr = '\0';
}
if((ptr = rindex(name, '-'))) {
*ptr = '\0';
}
if(!strcmp(name, target)) {
found = 1;
}
}
if(!found) {
return(NULL);
}
} else {
/* normal iteration */
int isdir = 0;
while(!isdir) {
ent = readdir(db->dir);
if(ent == NULL) {
return(NULL);
}
/* stat the entry, make sure it's a directory */
snprintf(path, PATH_MAX, "%s/%s", db->path, ent->d_name);
if(!stat(path, &sbuf) && S_ISDIR(sbuf.st_mode)) {
isdir = 1;
}
if(!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, "..")) {
isdir = 0;
continue;
}
}
}
pkg = pkg_new(NULL, NULL);
if(pkg == NULL) {
return(NULL);
}
if(db_read(db, ent->d_name, inforeq, pkg) == -1) {
FREEPKG(pkg);
}
return(pkg);
}
int db_read(pmdb_t *db, char *name, unsigned int inforeq, pmpkg_t *info)
{
FILE *fp = NULL;
struct stat buf;
char path[PATH_MAX];
char line[512];
if(db == NULL || name == NULL || info == NULL) {
return(-1);
}
snprintf(path, PATH_MAX, "%s/%s", db->path, name);
if(stat(path, &buf)) {
/* directory doesn't exist or can't be opened */
return(-1);
}
if(info->name[0] == 0) {
if(pkg_splitname(name, info->name, info->version) == -1) {
return(-1);
}
}
/* DESC */
if(inforeq & INFRQ_DESC) {
snprintf(path, PATH_MAX, "%s/%s/desc", db->path, name);
fp = fopen(path, "r");
if(fp == NULL) {
_alpm_log(PM_LOG_ERROR, "%s (%s)", path, strerror(errno));
goto error;
}
while(!feof(fp)) {
if(fgets(line, 256, fp) == NULL) {
break;
}
_alpm_strtrim(line);
if(!strcmp(line, "%DESC%")) {
if(fgets(info->desc, sizeof(info->desc), fp) == NULL) {
goto error;
}
_alpm_strtrim(info->desc);
} else if(!strcmp(line, "%GROUPS%")) {
while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
info->groups = pm_list_add(info->groups, strdup(line));
}
} else if(!strcmp(line, "%URL%")) {
if(fgets(info->url, sizeof(info->url), fp) == NULL) {
goto error;
}
_alpm_strtrim(info->url);
} else if(!strcmp(line, "%LICENSE%")) {
while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
info->license = pm_list_add(info->license, strdup(line));
}
} else if(!strcmp(line, "%ARCH%")) {
if(fgets(info->arch, sizeof(info->arch), fp) == NULL) {
goto error;
}
_alpm_strtrim(info->arch);
} else if(!strcmp(line, "%BUILDDATE%")) {
if(fgets(info->builddate, sizeof(info->builddate), fp) == NULL) {
goto error;
}
_alpm_strtrim(info->builddate);
} else if(!strcmp(line, "%INSTALLDATE%")) {
if(fgets(info->installdate, sizeof(info->installdate), fp) == NULL) {
goto error;
}
_alpm_strtrim(info->installdate);
} else if(!strcmp(line, "%PACKAGER%")) {
if(fgets(info->packager, sizeof(info->packager), fp) == NULL) {
goto error;
}
_alpm_strtrim(info->packager);
} else if(!strcmp(line, "%REASON%")) {
char tmp[32];
if(fgets(tmp, sizeof(tmp), fp) == NULL) {
goto error;
}
_alpm_strtrim(tmp);
info->reason = atol(tmp);
} else if(!strcmp(line, "%SIZE%") || !strcmp(line, "%CSIZE%")) {
/* NOTE: the CSIZE and SIZE fields both share the "size" field
* in the pkginfo_t struct. This can be done b/c CSIZE
* is currently only used in sync databases, and SIZE is
* only used in local databases.
*/
char tmp[32];
if(fgets(tmp, sizeof(tmp), fp) == NULL) {
goto error;
}
_alpm_strtrim(tmp);
info->size = atol(tmp);
} else if(!strcmp(line, "%MD5SUM%")) {
/* MD5SUM tag only appears in sync repositories,
* not the local one. */
if(fgets(info->md5sum, sizeof(info->md5sum), fp) == NULL) {
goto error;
}
/* XXX: these are only here as backwards-compatibility for pacman 2.x
* sync repos.... in pacman3, they have been moved to DEPENDS.
* Remove this when we move to pacman3 repos.
*/
} else if(!strcmp(line, "%REPLACES%")) {
/* the REPLACES tag is special -- it only appears in sync repositories,
* not the local one. */
while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
info->replaces = pm_list_add(info->replaces, strdup(line));
}
} else if(!strcmp(line, "%FORCE%")) {
/* FORCE tag only appears in sync repositories,
* not the local one. */
info->force = 1;
}
}
fclose(fp);
fp = NULL;
}
/* FILES */
if(inforeq & INFRQ_FILES) {
snprintf(path, PATH_MAX, "%s/%s/files", db->path, name);
fp = fopen(path, "r");
if(fp == NULL) {
_alpm_log(PM_LOG_ERROR, "%s (%s)", path, strerror(errno));
goto error;
}
while(fgets(line, 256, fp)) {
_alpm_strtrim(line);
if(!strcmp(line, "%FILES%")) {
while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
info->files = pm_list_add(info->files, strdup(line));
}
} else if(!strcmp(line, "%BACKUP%")) {
while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
info->backup = pm_list_add(info->backup, strdup(line));
}
}
}
fclose(fp);
fp = NULL;
}
/* DEPENDS */
if(inforeq & INFRQ_DEPENDS) {
snprintf(path, PATH_MAX, "%s/%s/depends", db->path, name);
fp = fopen(path, "r");
if(fp == NULL) {
_alpm_log(PM_LOG_ERROR, "%s (%s)", path, strerror(errno));
goto error;
}
while(!feof(fp)) {
fgets(line, 255, fp);
_alpm_strtrim(line);
if(!strcmp(line, "%DEPENDS%")) {
while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
info->depends = pm_list_add(info->depends, strdup(line));
}
} else if(!strcmp(line, "%REQUIREDBY%")) {
while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
info->requiredby = pm_list_add(info->requiredby, strdup(line));
}
} else if(!strcmp(line, "%CONFLICTS%")) {
while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
info->conflicts = pm_list_add(info->conflicts, strdup(line));
}
} else if(!strcmp(line, "%PROVIDES%")) {
while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
info->provides = pm_list_add(info->provides, strdup(line));
}
} else if(!strcmp(line, "%REPLACES%")) {
/* the REPLACES tag is special -- it only appears in sync repositories,
* not the local one. */
while(fgets(line, 512, fp) && strlen(_alpm_strtrim(line))) {
info->replaces = pm_list_add(info->replaces, strdup(line));
}
} else if(!strcmp(line, "%FORCE%")) {
/* FORCE tag only appears in sync repositories,
* not the local one. */
info->force = 1;
}
}
fclose(fp);
fp = NULL;
}
/* INSTALL */
if(inforeq & INFRQ_SCRIPLET) {
snprintf(path, PATH_MAX, "%s/%s/install", db->path, name);
if(!stat(path, &buf)) {
info->scriptlet = 1;
}
}
/* internal */
info->infolevel |= inforeq;
return(0);
error:
if(fp) {
fclose(fp);
}
return(-1);
}
int db_write(pmdb_t *db, pmpkg_t *info, unsigned int inforeq)
{
char topdir[PATH_MAX];
FILE *fp = NULL;
char path[PATH_MAX];
mode_t oldmask;
PMList *lp = NULL;
int retval = 0;
int local = 0;
if(db == NULL || info == NULL) {
return(-1);
}
snprintf(topdir, PATH_MAX, "%s/%s-%s", db->path, info->name, info->version);
oldmask = umask(0000);
mkdir(topdir, 0755);
/* make sure we have a sane umask */
umask(0022);
if(strcmp(db->treename, "local") == 0) {
local = 1;
}
/* DESC */
if(inforeq & INFRQ_DESC) {
snprintf(path, PATH_MAX, "%s/desc", topdir);
if((fp = fopen(path, "w")) == NULL) {
_alpm_log(PM_LOG_ERROR, "db_write: could not open file %s/desc", db->treename);
retval = 1;
goto cleanup;
}
fprintf(fp, "%%NAME%%\n%s\n\n"
"%%VERSION%%\n%s\n\n", info->name, info->version);
if(info->desc[0]) {
fprintf(fp, "%%DESC%%\n"
"%s\n\n", info->desc);
}
if(info->groups) {
fputs("%GROUPS%\n", fp);
for(lp = info->groups; lp; lp = lp->next) {
fprintf(fp, "%s\n", (char *)lp->data);
}
fprintf(fp, "\n");
}
if(local) {
if(info->url[0]) {
fprintf(fp, "%%URL%%\n"
"%s\n\n", info->url);
}
if(info->license) {
fputs("%LICENSE%\n", fp);
for(lp = info->license; lp; lp = lp->next) {
fprintf(fp, "%s\n", (char *)lp->data);
}
fprintf(fp, "\n");
}
if(info->arch[0]) {
fprintf(fp, "%%ARCH%%\n"
"%s\n\n", info->arch);
}
if(info->builddate[0]) {
fprintf(fp, "%%BUILDDATE%%\n"
"%s\n\n", info->builddate);
}
if(info->installdate[0]) {
fprintf(fp, "%%INSTALLDATE%%\n"
"%s\n\n", info->installdate);
}
if(info->packager[0]) {
fprintf(fp, "%%PACKAGER%%\n"
"%s\n\n", info->packager);
}
if(info->size) {
fprintf(fp, "%%SIZE%%\n"
"%ld\n\n", info->size);
}
if(info->reason) {
fprintf(fp, "%%REASON%%\n"
"%d\n\n", info->reason);
}
} else {
if(info->size) {
fprintf(fp, "%%CSIZE%%\n"
"%ld\n\n", info->size);
}
if(info->reason) {
fprintf(fp, "%%MD5SUM%%\n"
"%s\n\n", info->md5sum);
}
}
fclose(fp);
fp = NULL;
}
/* FILES */
if(local && inforeq & INFRQ_FILES) {
snprintf(path, PATH_MAX, "%s/files", topdir);
if((fp = fopen(path, "w")) == NULL) {
_alpm_log(PM_LOG_ERROR, "db_write: could not open file %s/files", db->treename);
retval = -1;
goto cleanup;
}
if(info->files) {
fprintf(fp, "%%FILES%%\n");
for(lp = info->files; lp; lp = lp->next) {
fprintf(fp, "%s\n", (char *)lp->data);
}
fprintf(fp, "\n");
}
if(info->backup) {
fprintf(fp, "%%BACKUP%%\n");
for(lp = info->backup; lp; lp = lp->next) {
fprintf(fp, "%s\n", (char *)lp->data);
}
fprintf(fp, "\n");
}
fclose(fp);
fp = NULL;
}
/* DEPENDS */
if(inforeq & INFRQ_DEPENDS) {
snprintf(path, PATH_MAX, "%s/depends", topdir);
if((fp = fopen(path, "w")) == NULL) {
_alpm_log(PM_LOG_ERROR, "db_write: could not open file %s/depends", db->treename);
retval = -1;
goto cleanup;
}
if(info->depends) {
fputs("%DEPENDS%\n", fp);
for(lp = info->depends; lp; lp = lp->next) {
fprintf(fp, "%s\n", (char *)lp->data);
}
fprintf(fp, "\n");
}
if(local && info->requiredby) {
fputs("%REQUIREDBY%\n", fp);
for(lp = info->requiredby; lp; lp = lp->next) {
fprintf(fp, "%s\n", (char *)lp->data);
}
fprintf(fp, "\n");
}
if(info->conflicts) {
fputs("%CONFLICTS%\n", fp);
for(lp = info->conflicts; lp; lp = lp->next) {
fprintf(fp, "%s\n", (char *)lp->data);
}
fprintf(fp, "\n");
}
if(info->provides) {
fputs("%PROVIDES%\n", fp);
for(lp = info->provides; lp; lp = lp->next) {
fprintf(fp, "%s\n", (char *)lp->data);
}
fprintf(fp, "\n");
}
if(!local) {
if(info->replaces) {
fputs("%REPLACES%\n", fp);
for(lp = info->replaces; lp; lp = lp->next) {
fprintf(fp, "%s\n", (char *)lp->data);
}
fprintf(fp, "\n");
}
if(info->force) {
fprintf(fp, "%%FORCE%%\n"
"\n");
}
}
fclose(fp);
fp = NULL;
}
/* INSTALL */
/* nothing needed here (script is automatically extracted) */
cleanup:
umask(oldmask);
if(fp) {
fclose(fp);
}
return(retval);
}
int db_remove(pmdb_t *db, pmpkg_t *info)
{
char topdir[PATH_MAX];
char file[PATH_MAX];
if(db == NULL || info == NULL) {
return(-1);
}
snprintf(topdir, PATH_MAX, "%s/%s-%s", db->path, info->name, info->version);
/* DESC */
snprintf(file, PATH_MAX, "%s/desc", topdir);
unlink(file);
/* FILES */
snprintf(file, PATH_MAX, "%s/files", topdir);
unlink(file);
/* DEPENDS */
snprintf(file, PATH_MAX, "%s/depends", topdir);
unlink(file);
/* INSTALL */
snprintf(file, PATH_MAX, "%s/install", topdir);
unlink(file);
/* Package directory */
if(rmdir(topdir) == -1) {
return(-1);
}
return(0);
}
/* vim: set ts=2 sw=2 noet: */
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