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/* This file is part of "reprepro"
* Copyright (C) 2005 Bernhard R. Link
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02111-1301 USA
*/
#include <config.h>
#include <errno.h>
#include <assert.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include "error.h"
#include "mprintf.h"
#include "strlist.h"
#include "names.h"
#include "configparser.h"
#include "filterlist.h"
struct filterlistfile {
size_t reference_count;
char *filename;
size_t filename_len;
/*@owned@*//*@null@*/
struct filterlistitem *root;
/*@dependent@*//*@null@*/
const struct filterlistitem *last;
/*@owned@*//*@null@*/
struct filterlistfile *next;
} *listfiles = NULL;
struct filterlistitem {
/*@owned@*//*@null@*/
struct filterlistitem *next;
char *packagename;
char *version;
enum filterlisttype what;
};
static void filterlistitems_free(/*@null@*//*@only@*/struct filterlistitem *list) {
while (list != NULL) {
struct filterlistitem *next = list->next;
free(list->version);
free(list->packagename);
free(list);
list = next;
}
}
static void filterlistfile_unlock(struct filterlistfile *list) {
assert (list != NULL);
if (list->reference_count <= 1) {
struct filterlistfile **p = &listfiles;
assert (list->reference_count == 1);
if (list->reference_count == 0)
return;
while (*p != NULL && *p != list)
p = &(*p)->next;
assert (p != NULL);
if (*p == list) {
*p = list->next;
filterlistitems_free(list->root);
free(list->filename);
free(list);
}
} else
list->reference_count--;
}
static inline retvalue filterlistfile_parse(struct filterlistfile *n, const char *filename, FILE *f) {
char *lineend, *namestart, *nameend, *what, *version;
int cmp;
enum filterlisttype type;
struct filterlistitem *h;
char line[1001];
int lineno = 0;
struct filterlistitem **last = &n->root;
while (fgets(line, 1000, f) != NULL) {
lineno++;
lineend = strchr(line, '\n');
if (lineend == NULL) {
fprintf(stderr, "Overlong or unterminated line in '%s'!\n", filename);
return RET_ERROR;
}
while (lineend >= line && xisspace(*lineend))
*(lineend--) = '\0';
/* Ignore line only containing whitespace */
if (line[0] == '\0')
continue;
/* Ignore lines starting with a comment sign */
if (line[0] == '#')
continue;
namestart = line;
while (*namestart != '\0' && xisspace(*namestart))
namestart++;
nameend=namestart;
while (*nameend != '\0' && !xisspace(*nameend))
nameend++;
what = nameend;
while (*what != '\0' && xisspace(*what))
*(what++)='\0';
if (*what == '\0') {
fprintf(stderr,
"Malformed line in '%s': %d!\n", filename, lineno);
return RET_ERROR;
}
version = NULL;
if (strcmp(what, "install") == 0) {
type = flt_install;
} else if (strcmp(what, "deinstall") == 0) {
type = flt_deinstall;
} else if (strcmp(what, "purge") == 0) {
type = flt_purge;
} else if (strcmp(what, "hold") == 0) {
type = flt_hold;
} else if (strcmp(what, "supersede") == 0) {
type = flt_supersede;
} else if (strcmp(what, "upgradeonly") == 0) {
type = flt_upgradeonly;
} else if (strcmp(what, "warning") == 0) {
type = flt_warning;
} else if (strcmp(what, "error") == 0) {
type = flt_error;
} else if (what[0] == '=') {
what++;
while (*what != '\0' && xisspace(*what))
what++;
version = what;
if (*version == '\0') {
fprintf(stderr,
"Malformed line %d in '%s': missing version after '='!\n",
lineno, filename);
return RET_ERROR;
}
while (*what != '\0' && !xisspace(*what))
what++;
while (*what != '\0' && xisspace(*what))
*(what++) = '\0';
if (*what != '\0') {
fprintf(stderr,
"Malformed line %d in '%s': space in version!\n",
lineno, filename);
return RET_ERROR;
}
type = flt_install;
} else {
fprintf(stderr,
"Unknown status in '%s':%d: '%s'!\n", filename, lineno, what);
return RET_ERROR;
}
if (*last == NULL || strcmp(namestart, (*last)->packagename) < 0)
last = &n->root;
cmp = -1;
while (*last != NULL &&
(cmp=strcmp(namestart, (*last)->packagename)) > 0)
last = &((*last)->next);
if (cmp == 0) {
fprintf(stderr,
"Two lines describing '%s' in '%s'!\n", namestart, filename);
return RET_ERROR;
}
h = zNEW(struct filterlistitem);
if (FAILEDTOALLOC(h)) {
return RET_ERROR_OOM;
}
h->next = *last;
*last = h;
h->what = type;
h->packagename = strdup(namestart);
if (FAILEDTOALLOC(h->packagename)) {
return RET_ERROR_OOM;
}
if (version == NULL)
h->version = NULL;
else {
h->version = strdup(version);
if (FAILEDTOALLOC(h->version))
return RET_ERROR_OOM;
}
}
n->last = *last;
return RET_OK;
}
static inline retvalue filterlistfile_read(struct filterlistfile *n, const char *filename) {
FILE *f;
retvalue r;
f = fopen(filename, "r");
if (f == NULL) {
fprintf(stderr, "Cannot open %s for reading: %s!\n",
filename, strerror(errno));
return RET_ERROR;
}
r = filterlistfile_parse(n, filename, f);
// Can this return an yet unseen error? was read-only..
(void)fclose(f);
return r;
}
static inline retvalue filterlistfile_getl(const char *filename, size_t len, struct filterlistfile **list) {
struct filterlistfile *p;
retvalue r;
for (p = listfiles ; p != NULL ; p = p->next) {
if (p->filename_len == len &&
strncmp(p->filename, filename, len) == 0) {
p->reference_count++;
*list = p;
return RET_OK;
}
}
p = zNEW(struct filterlistfile);
if (FAILEDTOALLOC(p))
return RET_ERROR_OOM;
p->reference_count = 1;
p->filename = strndup(filename, len);
p->filename_len = len;
if (FAILEDTOALLOC(p->filename)) {
free(p);
return RET_ERROR_OOM;
}
char *fullfilename = configfile_expandname(p->filename, NULL);
if (FAILEDTOALLOC(fullfilename))
r = RET_ERROR_OOM;
else {
r = filterlistfile_read(p, fullfilename);
free(fullfilename);
}
if (RET_IS_OK(r)) {
p->next = listfiles;
listfiles = p;
*list = p;
} else {
filterlistitems_free(p->root);
free(p->filename);
free(p);
}
return r;
}
static inline retvalue filterlistfile_get(/*@only@*/char *filename, /*@out@*/struct filterlistfile **list) {
struct filterlistfile *p;
retvalue r;
size_t len = strlen(filename);
for (p = listfiles ; p != NULL ; p = p->next) {
if (p->filename_len == len &&
strncmp(p->filename, filename, len) == 0) {
p->reference_count++;
*list = p;
free(filename);
return RET_OK;
}
}
p = zNEW(struct filterlistfile);
if (FAILEDTOALLOC(p)) {
free(filename);
return RET_ERROR_OOM;
}
p->reference_count = 1;
p->filename = filename;
p->filename_len = len;
if (FAILEDTOALLOC(p->filename)) {
free(p);
return RET_ERROR_OOM;
}
char *fullfilename = configfile_expandname(p->filename, NULL);
if (FAILEDTOALLOC(fullfilename))
r = RET_ERROR_OOM;
else {
r = filterlistfile_read(p, fullfilename);
free(fullfilename);
}
if (RET_IS_OK(r)) {
p->next = listfiles;
listfiles = p;
*list = p;
} else {
filterlistitems_free(p->root);
free(p->filename);
free(p);
}
return r;
}
void filterlist_release(struct filterlist *list) {
size_t i;
assert(list != NULL);
if (list->files != NULL) {
for (i = 0 ; i < list->count ; i++)
filterlistfile_unlock(list->files[i]);
free(list->files);
list->files = NULL;
} else {
assert (list->count == 0);
}
}
static const struct constant filterlisttype_listtypes[] = {
{"install", (int)flt_install},
{"hold", (int)flt_hold},
{"supersede", (int)flt_supersede},
{"deinstall", (int)flt_deinstall},
{"purge", (int)flt_purge},
{"upgradeonly", (int)flt_upgradeonly},
{"warning", (int)flt_warning},
{"error", (int)flt_error},
{NULL, 0}
};
retvalue filterlist_load(struct filterlist *list, struct configiterator *iter) {
enum filterlisttype defaulttype;
size_t count;
struct filterlistfile **files;
retvalue r;
char *filename;
r = config_getenum(iter, filterlisttype, listtypes, &defaulttype);
if (r == RET_NOTHING || r == RET_ERROR_UNKNOWNFIELD) {
fprintf(stderr,
"Error parsing %s, line %u, column %u: Expected default action as first argument to FilterList: (one of install, purge, hold, ...)\n",
config_filename(iter),
config_markerline(iter),
config_markercolumn(iter));
return RET_ERROR;
}
if (RET_WAS_ERROR(r))
return r;
count = 0;
files = NULL;
while ((r = config_getword(iter, &filename)) != RET_NOTHING) {
struct filterlistfile **n;
n = realloc(files, (count+1)*
sizeof(struct filterlistfile *));
if (FAILEDTOALLOC(n)) {
free(filename);
r = RET_ERROR_OOM;
} else {
n[count] = NULL;
files = n;
// TODO: make filename only
r = filterlistfile_get(filename, &files[count]);
if (RET_IS_OK(r))
count++;
}
if (RET_WAS_ERROR(r)) {
while (count > 0) {
count--;
filterlistfile_unlock(files[count]);
}
free(files);
return r;
}
}
list->count = count;
list->files = files;
list->defaulttype = defaulttype;
list->set = true;
return RET_OK;
}
static inline bool find(const char *name, /*@null@*/struct filterlistfile *list) {
int cmp;
/*@dependent@*/const struct filterlistitem *last = list->last;
assert (last != NULL);
if (last->next != NULL) {
cmp = strcmp(name, last->next->packagename);
if (cmp == 0) {
list->last = last->next;
return true;
}
}
if (last->next == NULL || cmp < 0) {
cmp = strcmp(name, last->packagename);
if (cmp == 0) {
return true;
} else if (cmp > 0)
return false;
last = list->root;
cmp = strcmp(name, last->packagename);
if (cmp == 0) {
list->last = list->root;
return true;
} else if (cmp < 0)
return false;
}
/* now we are after last */
while (last->next != NULL) {
cmp = strcmp(name, last->next->packagename);
if (cmp == 0) {
list->last = last->next;
return true;
}
if (cmp < 0) {
list->last = last;
return false;
}
last = last->next;
}
list->last = last;
return false;
}
enum filterlisttype filterlist_find(const char *name, const char *version, const struct filterlist *list) {
size_t i;
for (i = 0 ; i < list->count ; i++) {
if (list->files[i]->root == NULL)
continue;
if (!find(name, list->files[i]))
continue;
if (list->files[i]->last->version == NULL)
return list->files[i]->last->what;
if (strcmp(list->files[i]->last->version, version) == 0)
return list->files[i]->last->what;
}
return list->defaulttype;
}
struct filterlist cmdline_bin_filter = {
.count = 0,
.files = NULL,
/* as long as nothing added, this does not change anything.
* Once something is added, that will be auto_hold */
.defaulttype = flt_unchanged,
.set = false,
};
struct filterlist cmdline_src_filter = {
.count = 0,
.files = NULL,
/* as long as nothing added, this does not change anything.
* Once something is added, that will be auto_hold */
.defaulttype = flt_unchanged,
.set = false,
};
static retvalue filterlist_cmdline_init(struct filterlist *l) {
if (l->count == 0) {
l->files = nzNEW(2, struct filterlistfile *);
if (FAILEDTOALLOC(l->files))
return RET_ERROR_OOM;
l->files[0] = zNEW(struct filterlistfile);
if (FAILEDTOALLOC(l->files[0]))
return RET_ERROR_OOM;
l->files[0]->reference_count = 1;
l->count = 1;
}
return RET_OK;
}
retvalue filterlist_cmdline_add_file(bool src, const char *filename) {
retvalue r;
struct filterlist *l = src ? &cmdline_src_filter : &cmdline_bin_filter;
char *name;
r = filterlist_cmdline_init(l);
if (RET_WAS_ERROR(r))
return r;
l->set = true;
l->defaulttype = flt_auto_hold;
if (strcmp(filename, "-") == 0)
filename = "/dev/stdin";
name = strdup(filename);
if (FAILEDTOALLOC(name))
return RET_ERROR_OOM;
if (l->count > 1) {
struct filterlistfile **n;
n = realloc(l->files, (l->count + 1) *
sizeof(struct filterlistfile *));
if (FAILEDTOALLOC(n)) {
free(name);
return RET_ERROR_OOM;
}
n[l->count++] = NULL;
l->files = n;
} else {
/* already allocated in _init */
assert (l->count == 1);
l->count++;
}
return filterlistfile_get(name, &l->files[l->count - 1]);
}
retvalue filterlist_cmdline_add_pkg(bool src, const char *package) {
retvalue r;
enum filterlisttype what;
struct filterlist *l = src ? &cmdline_src_filter : &cmdline_bin_filter;
struct filterlistfile *f;
struct filterlistitem **p, *h;
char *name, *version;
const char *c;
int cmp;
r = filterlist_cmdline_init(l);
if (RET_WAS_ERROR(r))
return r;
l->set = true;
l->defaulttype = flt_auto_hold;
c = strchr(package, '=');
if (c != NULL) {
what = flt_install;
name = strndup(package, c - package);
if (FAILEDTOALLOC(name))
return RET_ERROR_OOM;
version = strdup(c + 1);
if (FAILEDTOALLOC(version)) {
free(name);
return RET_ERROR_OOM;
}
} else {
version = NULL;
c = strchr(package, ':');
if (c == NULL) {
what = flt_install;
name = strndup(package, c - package);
if (FAILEDTOALLOC(name))
return RET_ERROR_OOM;
} else {
const struct constant *t = filterlisttype_listtypes;
while (t->name != NULL) {
if (strcmp(c + 1, t->name) == 0) {
what = t->value;
break;
}
t++;
}
if (t->name == NULL) {
fprintf(stderr,
"Error: unknown filter-outcome '%s' (expected 'install' or ...)\n",
c + 1);
return RET_ERROR;
}
}
name = strndup(package, c - package);
if (FAILEDTOALLOC(name))
return RET_ERROR_OOM;
}
f = l->files[0];
assert (f != NULL);
p = &f->root;
cmp = -1;
while (*p != NULL && (cmp = strcmp(name, (*p)->packagename)) > 0)
p = &((*p)->next);
if (cmp == 0) {
fprintf(stderr,
"Package in command line filter two times: '%s'\n",
name);
free(name);
free(version);
return RET_ERROR;
}
h = zNEW(struct filterlistitem);
if (FAILEDTOALLOC(h)) {
free(name);
free(version);
return RET_ERROR_OOM;
}
h->next = *p;
*p = h;
h->what = what;
h->packagename = name;
h->version = version;
f->last = h;
return RET_OK;
}
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