#include "virt.h"
#include "def.h"
#include "sparse-endian.h"
+#include "formats-util.h"
/* Put this test here for a lack of better place */
assert_cc(EAGAIN == EWOULDBLOCK);
return (char*) s + sl - pl;
}
-char* endswith_no_case(const char *s, const char *postfix) {
- size_t sl, pl;
-
- assert(s);
- assert(postfix);
-
- sl = strlen(s);
- pl = strlen(postfix);
-
- if (pl == 0)
- return (char*) s + sl;
-
- if (sl < pl)
- return NULL;
-
- if (strcasecmp(s + sl - pl, postfix) != 0)
- return NULL;
-
- return (char*) s + sl - pl;
-}
-
char* first_word(const char *s, const char *word) {
size_t sl, wl;
const char *p;
assert(s);
- /* Does C style string escaping. */
+ /* Does C style string escaping. May be reversed with
+ * cunescape(). */
r = new(char, strlen(s)*4 + 1);
if (!r)
return r;
}
-static int cunescape_one(const char *p, size_t length, char *ret) {
+static int cunescape_one(const char *p, size_t length, char *ret, uint32_t *ret_unicode) {
int r = 1;
assert(p);
assert(*p);
assert(ret);
+ /* Unescapes C style. Returns the unescaped character in ret,
+ * unless we encountered a \u sequence in which case the full
+ * unicode character is returned in ret_unicode, instead. */
+
if (length != (size_t) -1 && length < 1)
return -EINVAL;
if (b < 0)
return -EINVAL;
- /* don't allow NUL bytes */
+ /* Don't allow NUL bytes */
if (a == 0 && b == 0)
return -EINVAL;
- *ret = (char) ((a << 4) | b);
+ *ret = (char) ((a << 4U) | b);
r = 3;
break;
}
+ case 'u': {
+ /* C++11 style 16bit unicode */
+
+ int a[4];
+ unsigned i;
+ uint32_t c;
+
+ if (length != (size_t) -1 && length < 5)
+ return -EINVAL;
+
+ for (i = 0; i < 4; i++) {
+ a[i] = unhexchar(p[1 + i]);
+ if (a[i] < 0)
+ return a[i];
+ }
+
+ c = ((uint32_t) a[0] << 12U) | ((uint32_t) a[1] << 8U) | ((uint32_t) a[2] << 4U) | (uint32_t) a[3];
+
+ /* Don't allow 0 chars */
+ if (c == 0)
+ return -EINVAL;
+
+ if (c < 128)
+ *ret = c;
+ else {
+ if (!ret_unicode)
+ return -EINVAL;
+
+ *ret = 0;
+ *ret_unicode = c;
+ }
+
+ r = 5;
+ break;
+ }
+
+ case 'U': {
+ /* C++11 style 32bit unicode */
+
+ int a[8];
+ unsigned i;
+ uint32_t c;
+
+ if (length != (size_t) -1 && length < 9)
+ return -EINVAL;
+
+ for (i = 0; i < 8; i++) {
+ a[i] = unhexchar(p[1 + i]);
+ if (a[i] < 0)
+ return a[i];
+ }
+
+ c = ((uint32_t) a[0] << 28U) | ((uint32_t) a[1] << 24U) | ((uint32_t) a[2] << 20U) | ((uint32_t) a[3] << 16U) |
+ ((uint32_t) a[4] << 12U) | ((uint32_t) a[5] << 8U) | ((uint32_t) a[6] << 4U) | (uint32_t) a[7];
+
+ /* Don't allow 0 chars */
+ if (c == 0)
+ return -EINVAL;
+
+ /* Don't allow invalid code points */
+ if (!unichar_is_valid(c))
+ return -EINVAL;
+
+ if (c < 128)
+ *ret = c;
+ else {
+ if (!ret_unicode)
+ return -EINVAL;
+
+ *ret = 0;
+ *ret_unicode = c;
+ }
+
+ r = 9;
+ break;
+ }
+
case '0':
case '1':
case '2':
case '6':
case '7': {
/* octal encoding */
- int a, b, c, m;
+ int a, b, c;
+ uint32_t m;
if (length != (size_t) -1 && length < 4)
return -EINVAL;
return -EINVAL;
/* Don't allow bytes above 255 */
- m = (a << 6) | (b << 3) | c;
+ m = ((uint32_t) a << 6U) | ((uint32_t) b << 3U) | (uint32_t) c;
if (m > 255)
return -EINVAL;
- *ret = (char) m;
+ *ret = m;
r = 3;
break;
}
for (f = s, t = r + pl; f < s + length; f++) {
size_t remaining;
+ uint32_t u;
+ char c;
int k;
remaining = s + length - f;
continue;
}
+ free(r);
return -EINVAL;
}
- k = cunescape_one(f + 1, remaining - 1, t);
+ k = cunescape_one(f + 1, remaining - 1, &c, &u);
if (k < 0) {
if (flags & UNESCAPE_RELAX) {
/* Invalid escape code, let's take it literal then */
continue;
}
+ free(r);
return k;
}
+ if (c != 0)
+ /* Non-Unicode? Let's encode this directly */
+ *(t++) = c;
+ else
+ /* Unicode? Then let's encode this in UTF-8 */
+ t += utf8_encode_unichar(t, u);
+
f += k;
- t++;
}
*t = 0;
/* Escapes all chars in bad, in addition to \ and all special
* chars, in \xFF style escaping. May be reversed with
- * cunescape. */
+ * cunescape(). */
r = new(char, strlen(s) * 4 + 1);
if (!r)
return touch_file(path, false, USEC_INFINITY, UID_INVALID, GID_INVALID, 0);
}
-char *unquote(const char *s, const char* quotes) {
+static char *unquote(const char *s, const char* quotes) {
size_t l;
assert(s);
/* This is rather stupid, simply removes the heading and
* trailing quotes if there is one. Doesn't care about
- * escaping or anything. We should make this smarter one
- * day... */
+ * escaping or anything.
+ *
+ * DON'T USE THIS FOR NEW CODE ANYMORE!*/
l = strlen(s);
if (l < 2)
return strdup(s);
}
-char *normalize_env_assignment(const char *s) {
- _cleanup_free_ char *value = NULL;
- const char *eq;
- char *p, *name;
-
- eq = strchr(s, '=');
- if (!eq) {
- char *r, *t;
-
- r = strdup(s);
- if (!r)
- return NULL;
-
- t = strstrip(r);
- if (t != r)
- memmove(r, t, strlen(t) + 1);
-
- return r;
- }
-
- name = strndupa(s, eq - s);
- p = strdupa(eq + 1);
-
- value = unquote(strstrip(p), QUOTES);
- if (!value)
- return NULL;
-
- return strjoin(strstrip(name), "=", value, NULL);
-}
-
int wait_for_terminate(pid_t pid, siginfo_t *status) {
siginfo_t dummy;
_cleanup_free_ char *t = NULL, *u = NULL;
size_t enc_len;
- u = unquote(tagvalue, "\"\'");
+ u = unquote(tagvalue, QUOTES);
if (!u)
return NULL;
return -EINVAL;
}
- if (!GREEDY_REALLOC(s, allocated, sz+2))
+ if (!GREEDY_REALLOC(s, allocated, sz+7))
return -ENOMEM;
if (flags & UNQUOTE_CUNESCAPE) {
- r = cunescape_one(*p, (size_t) -1, &c);
+ uint32_t u;
+
+ r = cunescape_one(*p, (size_t) -1, &c, &u);
if (r < 0)
return -EINVAL;
(*p) += r - 1;
- }
- s[sz++] = c;
- state = VALUE;
+ if (c != 0)
+ s[sz++] = c; /* normal explicit char */
+ else
+ sz += utf8_encode_unichar(s + sz, u); /* unicode chars we'll encode as utf8 */
+ } else
+ s[sz++] = c;
+ state = VALUE;
break;
case SINGLE_QUOTE:
return -EINVAL;
}
- if (!GREEDY_REALLOC(s, allocated, sz+2))
+ if (!GREEDY_REALLOC(s, allocated, sz+7))
return -ENOMEM;
if (flags & UNQUOTE_CUNESCAPE) {
- r = cunescape_one(*p, (size_t) -1, &c);
+ uint32_t u;
+
+ r = cunescape_one(*p, (size_t) -1, &c, &u);
if (r < 0)
return -EINVAL;
(*p) += r - 1;
- }
- s[sz++] = c;
+ if (c != 0)
+ s[sz++] = c;
+ else
+ sz += utf8_encode_unichar(s + sz, u);
+ } else
+ s[sz++] = c;
+
state = SINGLE_QUOTE;
break;
return -EINVAL;
}
- if (!GREEDY_REALLOC(s, allocated, sz+2))
+ if (!GREEDY_REALLOC(s, allocated, sz+7))
return -ENOMEM;
if (flags & UNQUOTE_CUNESCAPE) {
- r = cunescape_one(*p, (size_t) -1, &c);
+ uint32_t u;
+
+ r = cunescape_one(*p, (size_t) -1, &c, &u);
if (r < 0)
return -EINVAL;
(*p) += r - 1;
- }
- s[sz++] = c;
+ if (c != 0)
+ s[sz++] = c;
+ else
+ sz += utf8_encode_unichar(s + sz, u);
+ } else
+ s[sz++] = c;
+
state = DOUBLE_QUOTE;
break;
return 0;
}
+
+char *shell_maybe_quote(const char *s) {
+ const char *p;
+ char *r, *t;
+
+ assert(s);
+
+ /* Encloses a string in double quotes if necessary to make it
+ * OK as shell string. */
+
+ for (p = s; *p; p++)
+ if (*p <= ' ' ||
+ *p >= 127 ||
+ strchr(SHELL_NEED_QUOTES, *p))
+ break;
+
+ if (!*p)
+ return strdup(s);
+
+ r = new(char, 1+strlen(s)*2+1+1);
+ if (!r)
+ return NULL;
+
+ t = r;
+ *(t++) = '"';
+ t = mempcpy(t, s, p - s);
+
+ for (; *p; p++) {
+
+ if (strchr(SHELL_NEED_ESCAPE, *p))
+ *(t++) = '\\';
+
+ *(t++) = *p;
+ }
+
+ *(t++)= '"';
+ *t = 0;
+
+ return r;
+}
+
+int parse_mode(const char *s, mode_t *ret) {
+ char *x;
+ long l;
+
+ assert(s);
+ assert(ret);
+
+ errno = 0;
+ l = strtol(s, &x, 8);
+ if (errno != 0)
+ return -errno;
+
+ if (!x || x == s || *x)
+ return -EINVAL;
+ if (l < 0 || l > 07777)
+ return -ERANGE;
+
+ *ret = (mode_t) l;
+ return 0;
+}