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libmagic.patch
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diff -u libmagic.orig/apprentice.c libmagic/apprentice.c
--- libmagic.orig/apprentice.c 2024-11-27 16:37:00.000000000 +0100
+++ libmagic/apprentice.c 2025-02-09 02:25:02.364884555 +0100
@@ -32,7 +32,7 @@
#include "file.h"
#ifndef lint
-FILE_RCSID("@(#)$File: apprentice.c,v 1.356 2024/11/27 15:37:00 christos Exp $")
+FILE_RCSID("@(#)$File: apprentice.c,v 1.355 2024/11/25 22:31:53 christos Exp $")
#endif /* lint */
#include "magic.h"
@@ -48,7 +48,9 @@
#ifdef QUICK
#include <sys/mman.h>
#endif
+#ifdef HAVE_DIRENT_H
#include <dirent.h>
+#endif
#include <limits.h>
#ifdef HAVE_BYTESWAP_H
#include <byteswap.h>
@@ -146,10 +148,7 @@
#endif
file_private char *mkdbname(struct magic_set *, const char *, int);
-file_private struct magic_map *apprentice_buf(struct magic_set *, struct magic *,
- size_t);
file_private struct magic_map *apprentice_map(struct magic_set *, const char *);
-file_private int check_buffer(struct magic_set *, struct magic_map *, const char *);
file_private void apprentice_unmap(struct magic_map *);
file_private int apprentice_compile(struct magic_set *, struct magic_map *,
const char *);
@@ -185,6 +184,8 @@
{ NULL, 0, NULL }
};
+#include "../data_file.c"
+
#ifdef COMPILE_ONLY
int main(int, char *[]);
@@ -341,7 +342,11 @@
{
int type;
- if (isalpha(CAST(unsigned char, l[1]))) {
+ if (l[0] == '\0')
+ return FILE_INVALID;
+ if (l[1] == '\0')
+ return FILE_INVALID;
+ else if (isalpha(CAST(unsigned char, l[1]))) {
switch (l[1]) {
case 'C':
/* "dC" and "uC" */
@@ -445,21 +450,13 @@
struct mlist *ml;
mlp->map = NULL;
- if ((ml = CAST(struct mlist *, malloc(sizeof(*ml)))) == NULL)
+ if ((ml = CAST(struct mlist *, emalloc(sizeof(*ml)))) == NULL)
return -1;
ml->map = idx == 0 ? map : NULL;
ml->magic = map->magic[idx];
ml->nmagic = map->nmagic[idx];
- if (ml->nmagic) {
- ml->magic_rxcomp = CAST(file_regex_t **,
- calloc(ml->nmagic, sizeof(*ml->magic_rxcomp)));
- if (ml->magic_rxcomp == NULL) {
- free(ml);
- return -1;
- }
- } else
- ml->magic_rxcomp = NULL;
+
mlp->prev->next = ml;
ml->prev = mlp->prev;
ml->next = mlp;
@@ -537,14 +534,13 @@
return;
for (i = 0; i < MAGIC_SETS; i++)
mlist_free(ms->mlist[i]);
- free(ms->o.pbuf);
- free(ms->o.buf);
- free(ms->c.li);
- free(ms->fnamebuf);
+ efree(ms->o.pbuf);
+ efree(ms->o.buf);
+ efree(ms->c.li);
#ifdef USE_C_LOCALE
freelocale(ms->c_lc_ctype);
#endif
- free(ms);
+ efree(ms);
}
file_protected struct magic_set *
@@ -553,7 +549,7 @@
struct magic_set *ms;
size_t i, len;
- if ((ms = CAST(struct magic_set *, calloc(CAST(size_t, 1u),
+ if ((ms = CAST(struct magic_set *, ecalloc(CAST(size_t, 1u),
sizeof(*ms)))) == NULL)
return NULL;
@@ -566,14 +562,13 @@
ms->o.blen = 0;
len = (ms->c.len = 10) * sizeof(*ms->c.li);
- if ((ms->c.li = CAST(struct level_info *, malloc(len))) == NULL)
+ if ((ms->c.li = CAST(struct level_info *, emalloc(len))) == NULL)
goto free;
ms->event_flags = 0;
ms->error = -1;
for (i = 0; i < MAGIC_SETS; i++)
ms->mlist[i] = NULL;
- ms->fnamebuf = NULL;
ms->file = "unknown";
ms->line = 0;
ms->magwarn = 0;
@@ -593,51 +588,34 @@
#endif
return ms;
free:
- free(ms);
+ efree(ms);
return NULL;
}
file_private void
apprentice_unmap(struct magic_map *map)
{
- size_t i;
- char *p;
if (map == NULL)
return;
-
- switch (map->type) {
- case MAP_TYPE_USER:
- break;
- case MAP_TYPE_MALLOC:
- p = CAST(char *, map->p);
- for (i = 0; i < MAGIC_SETS; i++) {
- char *b = RCAST(char *, map->magic[i]);
- if (p != NULL && b >= p && b <= p + map->len)
- continue;
- free(b);
+ if (map->p != php_magic_database) {
+ if (map->p == NULL) {
+ int j;
+ for (j = 0; j < MAGIC_SETS; j++) {
+ if (map->magic[j]) {
+ efree(map->magic[j]);
+ }
+ }
+ } else {
+ efree(map->p);
}
- free(p);
- break;
-#ifdef QUICK
- case MAP_TYPE_MMAP:
- if (map->p && map->p != MAP_FAILED)
- (void)munmap(map->p, map->len);
- break;
-#endif
- default:
- fprintf(stderr, "Bad map type %d", map->type);
- abort();
}
- free(map);
+ efree(map);
}
file_private struct mlist *
mlist_alloc(void)
{
- struct mlist *mlist;
- if ((mlist = CAST(struct mlist *, calloc(1, sizeof(*mlist)))) == NULL) {
- return NULL;
- }
+ struct mlist *mlist = CAST(struct mlist *, ecalloc(1, sizeof(*mlist)));
mlist->next = mlist->prev = mlist;
return mlist;
}
@@ -656,21 +634,9 @@
file_private void
mlist_free_one(struct mlist *ml)
{
- size_t i;
-
if (ml->map)
apprentice_unmap(CAST(struct magic_map *, ml->map));
-
- for (i = 0; i < ml->nmagic; ++i) {
- if (ml->magic_rxcomp[i]) {
- file_regfree(ml->magic_rxcomp[i]);
- free(ml->magic_rxcomp[i]);
- ml->magic_rxcomp[i] = NULL;
- }
- }
- free(ml->magic_rxcomp);
- ml->magic_rxcomp = NULL;
- free(ml);
+ efree(ml);
}
file_private void
@@ -689,83 +655,37 @@
mlist_free_one(mlist);
}
-#ifndef COMPILE_ONLY
-/* void **bufs: an array of compiled magic files */
-file_protected int
-buffer_apprentice(struct magic_set *ms, struct magic **bufs,
- size_t *sizes, size_t nbufs)
-{
- size_t i, j;
- struct magic_map *map;
-
- if (nbufs == 0)
- return -1;
-
- (void)file_reset(ms, 0);
-
- init_file_tables();
-
- for (i = 0; i < MAGIC_SETS; i++) {
- mlist_free(ms->mlist[i]);
- if ((ms->mlist[i] = mlist_alloc()) == NULL) {
- file_oomem(ms, sizeof(*ms->mlist[0]));
- goto fail;
- }
- }
-
- for (i = 0; i < nbufs; i++) {
- map = apprentice_buf(ms, bufs[i], sizes[i]);
- if (map == NULL)
- goto fail;
-
- for (j = 0; j < MAGIC_SETS; j++) {
- if (add_mlist(ms->mlist[j], map, j) == -1) {
- file_oomem(ms, sizeof(*ms->mlist[0]));
- goto fail;
- }
- }
- }
-
- return 0;
-fail:
- mlist_free_all(ms);
- return -1;
-}
-#endif
-
/* const char *fn: list of magic files and directories */
file_protected int
file_apprentice(struct magic_set *ms, const char *fn, int action)
{
char *p;
int fileerr, errs = -1;
- size_t i, j;
+ size_t i;
(void)file_reset(ms, 0);
+ /* XXX disabling default magic loading so the compiled in data is used */
+#if 0
if ((fn = magic_getpath(fn, action)) == NULL)
return -1;
+#endif
init_file_tables();
- free(ms->fnamebuf);
- if ((ms->fnamebuf = strdup(fn)) == NULL) {
- file_oomem(ms, strlen(fn));
- return -1;
- }
-
for (i = 0; i < MAGIC_SETS; i++) {
mlist_free(ms->mlist[i]);
- if ((ms->mlist[i] = mlist_alloc()) == NULL) {
- file_oomem(ms, sizeof(*ms->mlist[0]));
- for (j = 0; j < i; j++) {
- mlist_free(ms->mlist[j]);
- ms->mlist[j] = NULL;
- }
- return -1;
- }
+ ms->mlist[i] = mlist_alloc();
}
- fn = ms->fnamebuf;
+
+ if (fn == NULL)
+ fn = getenv("MAGIC");
+ if (fn == NULL) {
+ return apprentice_1(ms, fn, action);
+ }
+
+ char *mfn = estrdup(fn); /* modified in loop */
+ fn = mfn;
while (fn) {
p = CCAST(char *, strchr(fn, PATHSEP));
@@ -778,6 +698,8 @@
fn = p;
}
+ efree(mfn);
+
if (errs == -1) {
for (i = 0; i < MAGIC_SETS; i++) {
mlist_free(ms->mlist[i]);
@@ -1143,6 +1065,8 @@
mpa.lineno = mpb.lineno = 0;
int x = memcmp(&mpa, &mpb, sizeof(mpa));
if (x == 0) {
+ /* For PHP BC: don't warn */
+#if 0
// Don't warn for DER
if (mpa.type == FILE_DER)
return 0;
@@ -1151,6 +1075,7 @@
file_mdump(ma->mp);
file_mdump(mb->mp);
return 0;
+#endif
}
return x > 0 ? -1 : 1;
}
@@ -1303,7 +1228,7 @@
size_t incr = mset[i].max + ALLOC_INCR;
if ((mp = CAST(struct magic_entry *,
- realloc(mset[i].me, sizeof(*mp) * incr))) ==
+ erealloc(mset[i].me, sizeof(*mp) * incr))) ==
NULL) {
file_oomem(ms, sizeof(*mp) * incr);
return -1;
@@ -1326,13 +1251,19 @@
load_1(struct magic_set *ms, int action, const char *fn, int *errs,
struct magic_entry_set *mset)
{
- size_t lineno = 0, llen = 0;
+ char buffer[BUFSIZ + 1];
char *line = NULL;
- ssize_t len;
+ size_t len;
+ size_t lineno = 0;
struct magic_entry me;
- FILE *f = fopen(ms->file = fn, "r");
- if (f == NULL) {
+ php_stream *stream;
+
+
+ ms->file = fn;
+ stream = php_stream_open_wrapper((char *)fn, "rb", REPORT_ERRORS, NULL);
+
+ if (stream == NULL) {
if (errno != ENOENT)
file_error(ms, errno, "cannot read magic file `%s'",
fn);
@@ -1342,8 +1273,8 @@
memset(&me, 0, sizeof(me));
/* read and parse this file */
- for (ms->line = 1; (len = getline(&line, &llen, f)) != -1;
- ms->line++) {
+ for (ms->line = 1; (line = php_stream_get_line(stream, buffer , BUFSIZ, &len)) != NULL;
+ ms->line++) {
if (ms->magwarn >= ms->magwarn_max)
break;
if (len == 0) /* null line, garbage, etc */
@@ -1404,8 +1335,8 @@
}
if (me.mp)
(void)addentry(ms, &me, mset);
- free(line);
- (void)fclose(f);
+ efree(line);
+ php_stream_close(stream);
}
/*
@@ -1490,7 +1421,7 @@
}
slen = sizeof(**ma) * mentrycount;
- if ((*ma = CAST(struct magic *, malloc(slen))) == NULL) {
+ if ((*ma = CAST(struct magic *, emalloc(slen))) == NULL) {
file_oomem(ms, slen);
return -1;
}
@@ -1512,8 +1443,8 @@
if (me == NULL)
return;
for (i = 0; i < nme; i++)
- free(me[i].mp);
- free(me);
+ efree(me[i].mp);
+ efree(me);
}
file_private struct magic_map *
@@ -1522,18 +1453,19 @@
int errs = 0;
uint32_t i, j;
size_t files = 0, maxfiles = 0;
- char **filearr = NULL, *mfn;
- struct stat st;
+ char **filearr = NULL;
+ zend_stat_t st = {0};
struct magic_map *map;
struct magic_entry_set mset[MAGIC_SETS];
- DIR *dir;
- struct dirent *d;
+ php_stream *dir;
+ php_stream_dirent d;
+
memset(mset, 0, sizeof(mset));
ms->flags |= MAGIC_CHECK; /* Enable checks for parsed files */
- if ((map = CAST(struct magic_map *, calloc(1, sizeof(*map)))) == NULL)
+ if ((map = CAST(struct magic_map *, ecalloc(1, sizeof(*map)))) == NULL)
{
file_oomem(ms, sizeof(*map));
return NULL;
@@ -1545,52 +1477,50 @@
(void)fprintf(stderr, "%s\n", usg_hdr);
/* load directory or file */
- if (stat(fn, &st) == 0 && S_ISDIR(st.st_mode)) {
- dir = opendir(fn);
+ /* FIXME: Read file names and sort them to prevent
+ non-determinism. See Debian bug #488562. */
+ if (php_sys_stat(fn, &st) == 0 && S_ISDIR(st.st_mode)) {
+ int mflen;
+ char mfn[MAXPATHLEN];
+
+ dir = php_stream_opendir((char *)fn, REPORT_ERRORS, NULL);
if (!dir) {
errs++;
goto out;
}
- while ((d = readdir(dir)) != NULL) {
- if (d->d_name[0] == '.')
- continue;
- if (asprintf(&mfn, "%s/%s", fn, d->d_name) < 0) {
+ while (php_stream_readdir(dir, &d)) {
+ if ((mflen = snprintf(mfn, sizeof(mfn), "%s/%s", fn, d.d_name)) < 0) {
file_oomem(ms,
- strlen(fn) + strlen(d->d_name) + 2);
+ strlen(fn) + strlen(d.d_name) + 2);
errs++;
- closedir(dir);
+ php_stream_closedir(dir);
goto out;
}
- if (stat(mfn, &st) == -1 || !S_ISREG(st.st_mode)) {
- free(mfn);
+ if (zend_stat(mfn, &st) == -1 || !S_ISREG(st.st_mode)) {
continue;
}
if (files >= maxfiles) {
size_t mlen;
- char **nfilearr;
maxfiles = (maxfiles + 1) * 2;
mlen = maxfiles * sizeof(*filearr);
- if ((nfilearr = CAST(char **,
- realloc(filearr, mlen))) == NULL) {
+ if ((filearr = CAST(char **,
+ erealloc(filearr, mlen))) == NULL) {
file_oomem(ms, mlen);
- free(mfn);
- closedir(dir);
+ php_stream_closedir(dir);
errs++;
goto out;
}
- filearr = nfilearr;
}
- filearr[files++] = mfn;
+ filearr[files++] = estrndup(mfn, (mflen > sizeof(mfn) - 1)? sizeof(mfn) - 1: mflen);
}
- closedir(dir);
+ php_stream_closedir(dir);
if (filearr) {
qsort(filearr, files, sizeof(*filearr), cmpstrp);
for (i = 0; i < files; i++) {
load_1(ms, action, filearr[i], &errs, mset);
- free(filearr[i]);
+ efree(filearr[i]);
}
- free(filearr);
- filearr = NULL;
+ efree(filearr);
}
} else
load_1(ms, action, fn, &errs, mset);
@@ -1628,7 +1558,6 @@
}
out:
- free(filearr);
for (j = 0; j < MAGIC_SETS; j++)
magic_entry_free(mset[j].me, mset[j].count);
@@ -2076,7 +2005,7 @@
if (me->cont_count == me->max_count) {
struct magic *nm;
size_t cnt = me->max_count + ALLOC_CHUNK;
- if ((nm = CAST(struct magic *, realloc(me->mp,
+ if ((nm = CAST(struct magic *, erealloc(me->mp,
sizeof(*nm) * cnt))) == NULL) {
file_oomem(ms, sizeof(*nm) * cnt);
return -1;
@@ -2091,7 +2020,7 @@
static const size_t len = sizeof(*m) * ALLOC_CHUNK;
if (me->mp != NULL)
return 1;
- if ((m = CAST(struct magic *, malloc(len))) == NULL) {
+ if ((m = CAST(struct magic *, emalloc(len))) == NULL) {
file_oomem(ms, len);
return -1;
}
@@ -2127,9 +2056,9 @@
}
/* get offset, then skip over it */
- if (*l == '-' || *l == '+') {
+ if (*l == '-') {
++l; /* step over */
- m->flag |= l[-1] == '-' ? OFFNEGATIVE : OFFPOSITIVE;
+ m->flag |= OFFNEGATIVE;
}
m->offset = CAST(int32_t, strtol(l, &t, 0));
if (l == t) {
@@ -2317,7 +2246,7 @@
m->mask_op = 0;
if (*l == '~') {
- if (!IS_STRING(m->type))
+ if (!IS_LIBMAGIC_STRING(m->type))
m->mask_op |= FILE_OPINVERSE;
else if (ms->flags & MAGIC_CHECK)
file_magwarn(ms, "'~' invalid for string types");
@@ -2326,7 +2255,7 @@
m->str_range = 0;
m->str_flags = m->type == FILE_PSTRING ? PSTRING_1_LE : 0;
if ((op = get_op(*l)) != -1) {
- if (IS_STRING(m->type)) {
+ if (IS_LIBMAGIC_STRING(m->type)) {
int r;
if (op != FILE_OPDIVIDE) {
@@ -2391,6 +2320,7 @@
}
break;
}
+
/*
* Grab the value part, except for an 'x' reln.
*/
@@ -2415,7 +2345,7 @@
++l;
m->flag |= NOSPACE;
}
- for (i = 0; (m->desc[i++] = *l++) != '\0' && i < sizeof(m->desc); )
+ for (i = 0; i < sizeof(m->desc) && (m->desc[i++] = *l++) != '\0';)
continue;
if (m->desc[0] == '\0') {
// Tuck in the filename for debugging.
@@ -2517,7 +2447,7 @@
file_private int
parse_extra(struct magic_set *ms, struct magic_entry *me, const char *line,
- size_t llen, off_t off, size_t len, const char *name, const char *extra,
+ size_t llen, zend_off_t off, size_t len, const char *name, const char *extra,
int nt)
{
size_t i;
@@ -2882,13 +2812,19 @@
return -1;
}
if (m->type == FILE_REGEX) {
- file_regex_t rx;
- int rc =
- file_regcomp(ms, &rx, m->value.s, REG_EXTENDED);
- if (rc == 0) {
- file_regfree(&rx);
+ zend_string *pattern;
+ int options = 0;
+ pcre_cache_entry *pce;
+
+ pattern = convert_libmagic_pattern(m->value.s, strlen(m->value.s), options);
+
+ if ((pce = pcre_get_compiled_regex_cache(pattern)) == NULL) {
+ zend_string_release(pattern);
+ return -1;
}
- return rc ? -1 : 0;
+ zend_string_release(pattern);
+
+ return 0;
}
return 0;
default:
@@ -3267,133 +3203,78 @@
}
/*
- * handle a buffer containing a compiled file.
- */
-file_private struct magic_map *
-apprentice_buf(struct magic_set *ms, struct magic *buf, size_t len)
-{
- struct magic_map *map;
-
- if ((map = CAST(struct magic_map *, calloc(1, sizeof(*map)))) == NULL) {
- file_oomem(ms, sizeof(*map));
- return NULL;
- }
- map->len = len;
- map->p = buf;
- map->type = MAP_TYPE_USER;
- if (check_buffer(ms, map, "buffer") != 0) {
- apprentice_unmap(map);
- return NULL;
- }
- return map;
-}
-
-/*
* handle a compiled file.
*/
file_private struct magic_map *
apprentice_map(struct magic_set *ms, const char *fn)
{
- int fd;
- struct stat st;
+ uint32_t *ptr;
+ uint32_t version, entries = 0, nentries;
+ int needsbyteswap;
char *dbname = NULL;
struct magic_map *map;
- struct magic_map *rv = NULL;
+ size_t i;
+ php_stream *stream = NULL;
+ php_stream_statbuf st;
- fd = -1;
- if ((map = CAST(struct magic_map *, calloc(1, sizeof(*map)))) == NULL) {
- file_oomem(ms, sizeof(*map));
- goto error;
- }
- map->type = MAP_TYPE_USER; /* unspecified */
+ map = CAST(struct magic_map *, ecalloc(1, sizeof(*map)));
+
+ if (fn == NULL) {
+ map->p = (void *)&php_magic_database;
+ goto internal_loaded;
+ }
+
+#ifdef PHP_WIN32
+ /* Don't bother on windows with php_stream_open_wrapper,
+ return to give apprentice_load() a chance. */
+ if (php_stream_stat_path_ex((char *)fn, 0, &st, NULL) == SUCCESS) {
+ if (st.sb.st_mode & S_IFDIR) {
+ goto error;
+ }
+ }
+#endif
dbname = mkdbname(ms, fn, 0);
if (dbname == NULL)
goto error;
- if ((fd = open(dbname, O_RDONLY|O_BINARY)) == -1)
+ stream = php_stream_open_wrapper((char *)fn, "rb", REPORT_ERRORS, NULL);
+
+ if (!stream) {
goto error;
+ }
- if (fstat(fd, &st) == -1) {
+#ifndef PHP_WIN32
+ if (php_stream_stat(stream, &st) < 0) {
file_error(ms, errno, "cannot stat `%s'", dbname);
goto error;
}
- if (st.st_size < 8 || st.st_size > maxoff_t()) {
+#endif
+ if (st.sb.st_size < 8 || st.sb.st_size > maxoff_t()) {
file_error(ms, 0, "file `%s' is too %s", dbname,
- st.st_size < 8 ? "small" : "large");
+ st.sb.st_size < 8 ? "small" : "large");
goto error;
}
- map->len = CAST(size_t, st.st_size);
-#ifdef QUICK
- map->type = MAP_TYPE_MMAP;
- if ((map->p = mmap(0, CAST(size_t, st.st_size), PROT_READ|PROT_WRITE,
- MAP_PRIVATE|MAP_FILE, fd, CAST(off_t, 0))) == MAP_FAILED) {
- file_error(ms, errno, "cannot map `%s'", dbname);
- goto error;
- }
-#else
map->type = MAP_TYPE_MALLOC;
- if ((map->p = CAST(void *, malloc(map->len))) == NULL) {
- file_oomem(ms, map->len);
- goto error;
- }
- if (read(fd, map->p, map->len) != (ssize_t)map->len) {
- file_badread(ms);
- goto error;
- }
-#endif
- (void)close(fd);
- fd = -1;
+ map->len = CAST(size_t, st.sb.st_size);
+ map->p = CAST(void *, emalloc(map->len));
- if (check_buffer(ms, map, dbname) != 0) {
- goto error;
- }
-#ifdef QUICK
- if (mprotect(map->p, CAST(size_t, st.st_size), PROT_READ) == -1) {
- file_error(ms, errno, "cannot mprotect `%s'", dbname);
+ if (php_stream_read(stream, map->p, (size_t)st.sb.st_size) != (size_t)st.sb.st_size) {
+ file_badread(ms);
goto error;
}
-#endif
-
- free(dbname);
- return map;
-error:
- if (fd != -1)
- (void)close(fd);
- apprentice_unmap(map);
- free(dbname);
- return rv;
-}
+ php_stream_close(stream);
+ stream = NULL;
-file_private int
-check_buffer(struct magic_set *ms, struct magic_map *map, const char *dbname)
-{
- uint32_t *ptr;
- uint32_t entries, nentries;
- uint32_t version;
- int i, needsbyteswap;
-
- entries = CAST(uint32_t, map->len / sizeof(struct magic));
- if (entries < MAGIC_SETS + 1) {
- file_error(ms, 0, "Too few magic entries %u in `%s'",
- entries, dbname);
- return -1;
- }
- if ((entries * sizeof(struct magic)) != map->len) {
- file_error(ms, 0, "Size of `%s' %" SIZE_T_FORMAT "u is not "
- "a multiple of %" SIZE_T_FORMAT "u",
- dbname, map->len, sizeof(struct magic));
- return -1;
- }
-
- ptr = CAST(uint32_t *, map->p);
+internal_loaded:
+ ptr = (uint32_t *)(void *)map->p;
if (*ptr != MAGICNO) {
if (swap4(*ptr) != MAGICNO) {
file_error(ms, 0, "bad magic in `%s'", dbname);
- return -1;
+ goto error;
}
needsbyteswap = 1;
} else
@@ -3403,10 +3284,29 @@
else
version = ptr[1];
if (version != VERSIONNO) {
- file_error(ms, 0, "File %s supports only version %d magic "
- "files. `%s' is version %d", VERSION,
+ file_error(ms, 0, "File %d supports only version %d magic "
+ "files. `%s' is version %d", MAGIC_VERSION,
VERSIONNO, dbname, version);
- return -1;
+ goto error;
+ }
+
+ /* php_magic_database is a const, performing writes will segfault. This is for big-endian
+ machines only, PPC and Sparc specifically. Consider static variable or MINIT in
+ future. */
+ if (needsbyteswap && fn == NULL) {
+ map->p = emalloc(sizeof(php_magic_database));
+ map->p = memcpy(map->p, php_magic_database, sizeof(php_magic_database));
+ }
+
+ if (NULL != fn) {
+ nentries = (uint32_t)(st.sb.st_size / sizeof(struct magic));
+ entries = (uint32_t)(st.sb.st_size / sizeof(struct magic));
+ if ((zend_off_t)(entries * sizeof(struct magic)) != st.sb.st_size) {
+ file_error(ms, 0, "Size of `%s' %llu is not a multiple of %zu",
+ dbname, (unsigned long long)st.sb.st_size,
+ sizeof(struct magic));
+ goto error;
+ }
}
map->magic[0] = CAST(struct magic *, map->p) + 1;
nentries = 0;
@@ -3419,15 +3319,29 @@
map->magic[i + 1] = map->magic[i] + map->nmagic[i];
nentries += map->nmagic[i];
}
- if (entries != nentries + 1) {
+ if (NULL != fn && entries != nentries + 1) {
file_error(ms, 0, "Inconsistent entries in `%s' %u != %u",
dbname, entries, nentries + 1);
- return -1;
+ goto error;
}
if (needsbyteswap)
for (i = 0; i < MAGIC_SETS; i++)
byteswap(map->magic[i], map->nmagic[i]);
- return 0;
+
+ if (dbname) {
+ efree(dbname);
+ }
+ return map;
+
+error:
+ if (stream) {
+ php_stream_close(stream);
+ }
+ apprentice_unmap(map);
+ if (dbname) {
+ efree(dbname);
+ }
+ return NULL;
}
/*
@@ -3438,7 +3352,7 @@
{
static const size_t nm = sizeof(*map->nmagic) * MAGIC_SETS;
static const size_t m = sizeof(**map->magic);
- int fd = -1;
+ php_stream *stream;
size_t len;
char *dbname;
int rv = -1;
@@ -3453,8 +3367,10 @@
if (dbname == NULL)
goto out;
- if ((fd = open(dbname, O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0644)) == -1)
- {
+ /* wb+ == O_WRONLY|O_CREAT|O_TRUNC|O_BINARY */
+ stream = php_stream_open_wrapper((char *)fn, "wb+", REPORT_ERRORS, NULL);
+
+ if (!stream) {
file_error(ms, errno, "cannot open `%s'", dbname);
goto out;
}
@@ -3463,26 +3379,25 @@
hdr.h[1] = VERSIONNO;
memcpy(hdr.h + 2, map->nmagic, nm);
- if (write(fd, &hdr, sizeof(hdr)) != CAST(ssize_t, sizeof(hdr))) {
+ if (php_stream_write(stream,(const char *)&hdr, sizeof(hdr)) != (ssize_t)sizeof(hdr)) {
file_error(ms, errno, "error writing `%s'", dbname);
- goto out2;
+ goto out;
}
for (i = 0; i < MAGIC_SETS; i++) {
len = m * map->nmagic[i];
- if (write(fd, map->magic[i], len) != CAST(ssize_t, len)) {
+ if (php_stream_write(stream, (const char *)map->magic[i], len) != (ssize_t)len) {
file_error(ms, errno, "error writing `%s'", dbname);
- goto out2;
+ goto out;
}
}
rv = 0;
-out2:
- if (fd != -1)
- (void)close(fd);
+ if (stream) {
+ php_stream_close(stream);
+ }
out:
- apprentice_unmap(map);
- free(dbname);
+ efree(dbname);
return rv;
}
@@ -3516,17 +3431,18 @@
q++;
/* Compatibility with old code that looked in .mime */
if (ms->flags & MAGIC_MIME) {
- if (asprintf(&buf, "%.*s.mime%s", CAST(int, q - fn), fn, ext)
- < 0)
- return NULL;
- if (access(buf, R_OK) != -1) {
+ spprintf(&buf, MAXPATHLEN, "%.*s.mime%s", CAST(int, q - fn), fn, ext);
+#ifdef PHP_WIN32
+ if (VCWD_ACCESS(buf, R_OK) == 0) {
+#else
+ if (VCWD_ACCESS(buf, R_OK) != -1) {
+#endif
ms->flags &= MAGIC_MIME_TYPE;
return buf;
}
- free(buf);
+ efree(buf);
}
- if (asprintf(&buf, "%.*s%s", CAST(int, q - fn), fn, ext) < 0)
- return NULL;
+ spprintf(&buf, MAXPATHLEN, "%.*s%s", CAST(int, q - fn), fn, ext);
/* Compatibility with old code that looked in .mime */
if (strstr(fn, ".mime") != NULL)
@@ -3648,7 +3564,7 @@
m->offset = swap4(CAST(uint32_t, m->offset));
m->in_offset = swap4(CAST(uint32_t, m->in_offset));
m->lineno = swap4(CAST(uint32_t, m->lineno));
- if (IS_STRING(m->type)) {
+ if (IS_LIBMAGIC_STRING(m->type)) {
m->str_range = swap4(m->str_range);
m->str_flags = swap4(m->str_flags);
}
@@ -3745,7 +3661,6 @@
continue;
if (strcmp(ma[i].value.s, name) == 0) {
v->magic = &ma[i];
- v->magic_rxcomp = &(ml->magic_rxcomp[i]);
for (j = i + 1; j < ml->nmagic; j++)
if (ma[j].cont_level == 0)
break;
diff -u libmagic.orig/ascmagic.c libmagic/ascmagic.c
--- libmagic.orig/ascmagic.c 2024-06-19 18:18:53.000000000 +0200
+++ libmagic/ascmagic.c 2025-02-09 01:20:19.757840211 +0100
@@ -96,7 +96,7 @@
rv = file_ascmagic_with_encoding(ms, &bb,
ubuf, ulen, code, type, text);
- free(ubuf);
+ efree(ubuf);
return rv;
}
@@ -143,7 +143,7 @@
/* malloc size is a conservative overestimate; could be
improved, or at least realloced after conversion. */
mlen = ulen * 6;
- if ((utf8_buf = CAST(unsigned char *, malloc(mlen))) == NULL) {
+ if ((utf8_buf = CAST(unsigned char *, emalloc(mlen))) == NULL) {
file_oomem(ms, mlen);
goto done;
}
@@ -267,8 +267,8 @@
goto done;
if (has_long_lines)
- if (file_printf(ms, ", with very long lines (%"
- SIZE_T_FORMAT "u)", has_long_lines) == -1)
+ if (file_printf(ms, ", with very long lines (%zu)",
+ has_long_lines) == -1)
goto done;
/*
@@ -324,7 +324,8 @@
}
rv = 1;
done:
- free(utf8_buf);
+ if (utf8_buf)
+ efree(utf8_buf);
return rv;
}
diff -u libmagic.orig/buffer.c libmagic/buffer.c
--- libmagic.orig/buffer.c 2024-06-19 18:18:53.000000000 +0200
+++ libmagic/buffer.c 2025-02-09 01:20:19.757910844 +0100