27728979565

Committed 17 Jun 2026 12:11PM UTC coverage: 72.586% (-0.4%) from 73.001%

Build # 27728979565

Build Type

push

github

Committed by

web-flow

Commit Message

mkosi: fix suse build (#42637)

No longer exists since latest spec changes, as the binaries have moved
to another package so it doesn't get autogenerated anymore

Follow-up for db9d7265f

Coverage Stats

335884 of 462738 relevant lines covered (72.59%)

1397781.59 hits per line

Source File
Press 'n' to go to next uncovered line, 'b' for previous

99.42

/src/basic/escape.c

/* SPDX-License-Identifier: LGPL-2.1-or-later */

#include <stdlib.h>
#include <string.h>

#include "alloc-util.h"
#include "escape.h"
#include "hexdecoct.h"
#include "string-util.h"
#include "strv.h"
#include "utf8.h"

int cescape_char(char c, char *buf) {
        char *buf_old = buf;

        /* Needs space for 4 characters in the buffer */

        switch (c) {

                case '\a':
                        *(buf++) = '\\';
                        *(buf++) = 'a';
                        break;
                case '\b':
                        *(buf++) = '\\';
                        *(buf++) = 'b';
                        break;
                case '\f':
                        *(buf++) = '\\';
                        *(buf++) = 'f';
                        break;
                case '\n':
                        *(buf++) = '\\';
                        *(buf++) = 'n';
                        break;
                case '\r':
                        *(buf++) = '\\';
                        *(buf++) = 'r';
                        break;
                case '\t':
                        *(buf++) = '\\';
                        *(buf++) = 't';
                        break;
                case '\v':
                        *(buf++) = '\\';
                        *(buf++) = 'v';
                        break;
                case '\\':
                        *(buf++) = '\\';
                        *(buf++) = '\\';
                        break;
                case '"':
                        *(buf++) = '\\';
                        *(buf++) = '"';
                        break;
                case '\'':
                        *(buf++) = '\\';
                        *(buf++) = '\'';
                        break;

                default:
                        /* For special chars we prefer octal over
                         * hexadecimal encoding, simply because glib's
                         * g_strescape() does the same */
                        if ((c < ' ') || (c >= 127)) {
                                *(buf++) = '\\';
                                *(buf++) = octchar((unsigned char) c >> 6);
                                *(buf++) = octchar((unsigned char) c >> 3);
                                *(buf++) = octchar((unsigned char) c);
                        } else
                                *(buf++) = c;
                        break;
        }

        return buf - buf_old;
}

char* cescape_length(const char *s, size_t n) {
        const char *f;
        char *r, *t;

        /* Does C style string escaping. May be reversed with cunescape(). */

        assert(s || n == 0);

        if (n == SIZE_MAX)
                n = strlen(s);

        if (n > (SIZE_MAX - 1) / 4)
                return NULL;

        r = new(char, n*4 + 1);
        if (!r)
                return NULL;

        for (f = s, t = r; f < s + n; f++)
                t += cescape_char(*f, t);

        *t = 0;

        return r;
}

int cunescape_one(const char *p, size_t length, char32_t *ret, bool *eight_bit, bool accept_nul) {
        int r = 1;

        assert(p);
        assert(ret);
        assert(eight_bit);

        /* Unescapes C style. Returns the unescaped character in ret.
         * Sets *eight_bit to true if the escaped sequence either fits in
         * one byte in UTF-8 or is a non-unicode literal byte and should
         * instead be copied directly.
         */

        if (length != SIZE_MAX && length < 1)
                return -EINVAL;

        switch (p[0]) {

        case 'a':
                *ret = '\a';
                break;
        case 'b':
                *ret = '\b';
                break;
        case 'f':
                *ret = '\f';
                break;
        case 'n':
                *ret = '\n';
                break;
        case 'r':
                *ret = '\r';
                break;
        case 't':
                *ret = '\t';
                break;
        case 'v':
                *ret = '\v';
                break;
        case '\\':
                *ret = '\\';
                break;
        case '"':
                *ret = '"';
                break;
        case '\'':
                *ret = '\'';
                break;

        case 's':
                /* This is an extension of the XDG syntax files */
                *ret = ' ';
                break;

        case 'x': {
                /* hexadecimal encoding */
                int a, b;

                if (length != SIZE_MAX && length < 3)
                        return -EINVAL;

                a = unhexchar(p[1]);
                if (a < 0)
                        return -EINVAL;

                b = unhexchar(p[2]);
                if (b < 0)
                        return -EINVAL;

                /* Don't allow NUL bytes */
                if (a == 0 && b == 0 && !accept_nul)
                        return -EINVAL;

                *ret = (a << 4U) | b;
                *eight_bit = true;
                r = 3;
                break;
        }

        case 'u': {
                /* C++11 style 16-bit unicode */

                int a[4];
                size_t i;
                uint32_t c;

                if (length != SIZE_MAX && 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 && !accept_nul)
                        return -EINVAL;

                *ret = c;
                r = 5;
                break;
        }

        case 'U': {
                /* C++11 style 32-bit unicode */

                int a[8];
                size_t i;
                char32_t c;

                if (length != SIZE_MAX && 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 && !accept_nul)
                        return -EINVAL;

                /* Don't allow invalid code points */
                if (!unichar_is_valid(c))
                        return -EINVAL;

                *ret = c;
                r = 9;
                break;
        }

        case '0':
        case '1':
        case '2':
        case '3':
        case '4':
        case '5':
        case '6':
        case '7': {
                /* octal encoding */
                int a, b, c;
                char32_t m;

                if (length != SIZE_MAX && length < 3)
                        return -EINVAL;

                a = unoctchar(p[0]);
                if (a < 0)
                        return -EINVAL;

                b = unoctchar(p[1]);
                if (b < 0)
                        return -EINVAL;

                c = unoctchar(p[2]);
                if (c < 0)
                        return -EINVAL;

                /* don't allow NUL bytes */
                if (a == 0 && b == 0 && c == 0 && !accept_nul)
                        return -EINVAL;

                /* Don't allow bytes above 255 */
                m = ((uint32_t) a << 6U) | ((uint32_t) b << 3U) | (uint32_t) c;
                if (m > 255)
                        return -EINVAL;

                *ret = m;
                *eight_bit = true;
                r = 3;
                break;
        }

        default:
                return -EINVAL;
        }

        return r;
}

ssize_t cunescape_length_with_prefix(const char *s, size_t length, const char *prefix, UnescapeFlags flags, char **ret) {
        _cleanup_free_ char *ans = NULL;
        char *t;
        const char *f;
        size_t pl;
        int r;

        assert(s);
        assert(ret);

        /* Undoes C style string escaping, and optionally prefixes it. */

        if (length == SIZE_MAX)
                length = strlen(s);

        pl = strlen_ptr(prefix);

        ans = new(char, pl+length+1);
        if (!ans)
                return -ENOMEM;

        if (prefix)
                memcpy(ans, prefix, pl);

        for (f = s, t = ans + pl; f < s + length; f++) {
                size_t remaining;
                bool eight_bit = false;
                char32_t u;

                remaining = s + length - f;
                assert(remaining > 0);

                if (*f != '\\') {
                        /* A literal, copy verbatim */
                        *(t++) = *f;
                        continue;
                }

                if (remaining == 1) {
                        if (flags & UNESCAPE_RELAX) {
                                /* A trailing backslash, copy verbatim */
                                *(t++) = *f;
                                continue;
                        }

                        return -EINVAL;
                }

                r = cunescape_one(f + 1, remaining - 1, &u, &eight_bit, flags & UNESCAPE_ACCEPT_NUL);
                if (r < 0) {
                        if (flags & UNESCAPE_RELAX) {
                                /* Invalid escape code, let's take it literal then */
                                *(t++) = '\\';
                                continue;
                        }

                        return r;
                }

                f += r;
                if (eight_bit)
                        /* One byte? Set directly as specified */
                        *(t++) = u;
                else
                        /* Otherwise encode as multi-byte UTF-8 */
                        t += utf8_encode_unichar(t, u);
        }

        *t = 0;

        assert(t >= ans); /* Let static analyzers know that the answer is non-negative. */
        *ret = TAKE_PTR(ans);
        return t - *ret;
}

char* xescape_full(const char *s, const char *bad, size_t console_width, XEscapeFlags flags) {
        char *ans, *t, *prev, *prev2;
        const char *f;

        assert(s);

        /* Escapes all chars in bad, in addition to \ and all special chars, in \xFF style escaping. May be
         * reversed with cunescape(). If XESCAPE_8_BIT is specified, characters >= 127 are let through
         * unchanged. This corresponds to non-ASCII printable characters in pre-unicode encodings.
         *
         * If console_width is reached, or XESCAPE_FORCE_ELLIPSIS is set, output is truncated and "..." is
         * appended. */

        if (console_width == 0)
                return strdup("");

        size_t body = MIN(strlen(s), console_width) * 4;
        ans = new(char, body + STRLEN("...") + 1);
        if (!ans)
                return NULL;

        memset(ans, '_', body);
        ans[body] = 0;

        bool force_ellipsis = FLAGS_SET(flags, XESCAPE_FORCE_ELLIPSIS);

        for (f = s, t = prev = prev2 = ans; ; f++) {
                char *tmp_t = t;

                if (!*f) {
                        if (force_ellipsis)
                                break;

                        *t = 0;
                        return ans;
                }

                if ((unsigned char) *f < ' ' ||
                    (!FLAGS_SET(flags, XESCAPE_8_BIT) && (unsigned char) *f >= 127) ||
                    *f == '\\' || (bad && strchr(bad, *f))) {
                        if ((size_t) (t - ans) + 4 + 3 * force_ellipsis > console_width)
                                break;

                        *(t++) = '\\';
                        *(t++) = 'x';
                        *(t++) = hexchar(*f >> 4);
                        *(t++) = hexchar(*f);
                } else {
                        if ((size_t) (t - ans) + 1 + 3 * force_ellipsis > console_width)
                                break;

                        *(t++) = *f;
                }

                /* We might need to go back two cycles to fit three dots, so remember two positions */
                prev2 = prev;
                prev = tmp_t;
        }

        /* We can just write where we want, since chars are one-byte */
        size_t c = MIN(console_width, 3u); /* If the console is too narrow, write fewer dots */
        size_t off;
        if (console_width - c >= (size_t) (t - ans))
                off = (size_t) (t - ans);
        else if (console_width - c >= (size_t) (prev - ans))
                off = (size_t) (prev - ans);
        else if (console_width - c >= (size_t) (prev2 - ans))
                off = (size_t) (prev2 - ans);
        else
                off = console_width - c;
        assert(off <= (size_t) (t - ans));

        memcpy(ans + off, "...", c);
        ans[off + c] = '\0';
        return ans;
}

char* escape_non_printable_full(const char *str, size_t console_width, XEscapeFlags flags) {
        if (FLAGS_SET(flags, XESCAPE_8_BIT))
                return xescape_full(str, /* bad= */ NULL, console_width, flags);
        else
                return utf8_escape_non_printable_full(str,
                                                      console_width,
                                                      FLAGS_SET(flags, XESCAPE_FORCE_ELLIPSIS));
}

char* octescape_full(const char *s, size_t len, const char *bad) {
        char *buf, *t;

        /* Escapes all chars in bad, in addition to \ and " chars, in \nnn octal style escaping. */

        assert(s || len == 0);

        if (len == SIZE_MAX)
                len = strlen(s);

        if (len > (SIZE_MAX - 1) / 4)
                return NULL;

        t = buf = new(char, len * 4 + 1);
        if (!buf)
                return NULL;

        for (size_t i = 0; i < len; i++) {
                uint8_t u = (uint8_t) s[i];

                if (u < ' ' || u >= 127 || IN_SET(u, '\\', '"') || (bad && strchr(bad, u))) {
                        *(t++) = '\\';
                        *(t++) = '0' + (u >> 6);
                        *(t++) = '0' + ((u >> 3) & 7);
                        *(t++) = '0' + (u & 7);
                } else
                        *(t++) = u;
        }

        *t = 0;
        return buf;
}

char* decescape(const char *s, size_t len, const char *bad) {
        char *buf, *t;

        /* Escapes all chars in bad, in addition to \ and " chars, in \nnn decimal style escaping. */

        assert(s || len == 0);

        if (len == SIZE_MAX)
                len = strlen(s);

        if (len > (SIZE_MAX - 1) / 4)
                return NULL;

        t = buf = new(char, len * 4 + 1);
        if (!buf)
                return NULL;

        for (size_t i = 0; i < len; i++) {
                uint8_t u = (uint8_t) s[i];

                if (u < ' ' || u >= 127 || IN_SET(u, '\\', '"') || strchr(bad, u)) {
                        *(t++) = '\\';
                        *(t++) = '0' + (u / 100);
                        *(t++) = '0' + ((u / 10) % 10);
                        *(t++) = '0' + (u % 10);
                } else
                        *(t++) = u;
        }

        *t = 0;
        return buf;
}

static char* strcpy_backslash_escaped(char *t, const char *s, const char *bad) {
        assert(bad);
        assert(t);
        assert(s);

        while (*s) {
                int l = utf8_encoded_valid_unichar(s, SIZE_MAX);

                if (char_is_cc(*s) || l < 0)
                        t += cescape_char(*(s++), t);
                else if (l == 1) {
                        if (*s == '\\' || strchr(bad, *s))
                                *(t++) = '\\';
                        *(t++) = *(s++);
                } else {
                        t = mempcpy(t, s, l);
                        s += l;
                }
        }

        return t;
}

char* shell_escape(const char *s, const char *bad) {
        char *buf, *t;

        buf = new(char, strlen(s)*4+1);
        if (!buf)
                return NULL;

        t = strcpy_backslash_escaped(buf, s, bad);
        *t = 0;

        return buf;
}

char* shell_maybe_quote(const char *s, ShellEscapeFlags flags) {
        const char *p;
        char *buf, *t;

        assert(s);

        /* Encloses a string in quotes if necessary to make it OK as a shell string. */

        if (FLAGS_SET(flags, SHELL_ESCAPE_EMPTY) && isempty(s))
                return strdup("\"\""); /* We don't use $'' here in the POSIX mode. "" is fine too. */

        for (p = s; *p; ) {
                int l = utf8_encoded_valid_unichar(p, SIZE_MAX);

                if (char_is_cc(*p) || l < 0 ||
                    strchr(WHITESPACE SHELL_NEED_QUOTES, *p))
                        break;

                p += l;
        }

        if (!*p)
                return strdup(s);

        buf = new(char, FLAGS_SET(flags, SHELL_ESCAPE_POSIX) + 1 + strlen(s)*4 + 1 + 1);
        if (!buf)
                return NULL;

        t = buf;
        if (FLAGS_SET(flags, SHELL_ESCAPE_POSIX)) {
                *(t++) = '$';
                *(t++) = '\'';
        } else
                *(t++) = '"';

        t = mempcpy(t, s, p - s);

        t = strcpy_backslash_escaped(t, p,
                                     FLAGS_SET(flags, SHELL_ESCAPE_POSIX) ? SHELL_NEED_ESCAPE_POSIX : SHELL_NEED_ESCAPE);

        if (FLAGS_SET(flags, SHELL_ESCAPE_POSIX))
                *(t++) = '\'';
        else
                *(t++) = '"';
        *t = 0;

        return str_realloc(buf);
}

char* quote_command_line(char * const *argv, ShellEscapeFlags flags) {
        _cleanup_free_ char *result = NULL;

        assert(argv);

        STRV_FOREACH(a, argv) {
                _cleanup_free_ char *t = NULL;

                t = shell_maybe_quote(*a, flags);
                if (!t)
                        return NULL;

                if (!strextend_with_separator(&result, " ", t))
                        return NULL;
        }

        return str_realloc(TAKE_PTR(result));
}

1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
2
3	#include <stdlib.h>
4	#include <string.h>
5
6	#include "alloc-util.h"
7	#include "escape.h"
8	#include "hexdecoct.h"
9	#include "string-util.h"
10	#include "strv.h"
11	#include "utf8.h"
12
13	int cescape_char(char c, char *buf) {	1,614,108✔
14	char *buf_old = buf;	1,614,108✔
15
16	/* Needs space for 4 characters in the buffer */
17
18	switch (c) {	1,614,108✔
19
20	case '\a':	7✔
21	*(buf++) = '\\';	7✔
22	*(buf++) = 'a';	7✔
23	break;	7✔
24	case '\b':	9✔
25	*(buf++) = '\\';	9✔
26	*(buf++) = 'b';	9✔
27	break;	9✔
28	case '\f':	7✔
29	*(buf++) = '\\';	7✔
30	*(buf++) = 'f';	7✔
31	break;	7✔
32	case '\n':	16,566✔
33	*(buf++) = '\\';	16,566✔
34	*(buf++) = 'n';	16,566✔
35	break;	16,566✔
36	case '\r':	8✔
37	*(buf++) = '\\';	8✔
38	*(buf++) = 'r';	8✔
39	break;	8✔
40	case '\t':	53✔
41	*(buf++) = '\\';	53✔
42	*(buf++) = 't';	53✔
43	break;	53✔
44	case '\v':	2✔
45	*(buf++) = '\\';	2✔
46	*(buf++) = 'v';	2✔
47	break;	2✔
48	case '\\':	109✔
49	*(buf++) = '\\';	109✔
50	*(buf++) = '\\';	109✔
51	break;	109✔
52	case '"':	3,604✔
53	*(buf++) = '\\';	3,604✔
54	*(buf++) = '"';	3,604✔
55	break;	3,604✔
56	case '\'':	19✔
57	*(buf++) = '\\';	19✔
58	*(buf++) = '\'';	19✔
59	break;	19✔
60
61	default:	1,593,724✔
62	/* For special chars we prefer octal over
63	* hexadecimal encoding, simply because glib's
64	* g_strescape() does the same */
65	if ((c < ' ') \|\| (c >= 127)) {	1,593,724✔
66	*(buf++) = '\\';	11,903✔
67	*(buf++) = octchar((unsigned char) c >> 6);	11,903✔
68	*(buf++) = octchar((unsigned char) c >> 3);	11,903✔
69	*(buf++) = octchar((unsigned char) c);	11,903✔
70	} else
71	*(buf++) = c;	1,581,821✔
72	break;
73	}
74
75	return buf - buf_old;	1,614,108✔
76	}
77
78	char* cescape_length(const char *s, size_t n) {	40,993✔
79	const char *f;	40,993✔
80	char r, t;	40,993✔
81
82	/* Does C style string escaping. May be reversed with cunescape(). */
83
84	assert(s \|\| n == 0);	40,993✔
85
86	if (n == SIZE_MAX)	40,993✔
87	n = strlen(s);	25,781✔
88
89	if (n > (SIZE_MAX - 1) / 4)	40,993✔
90	return NULL;
91
92	r = new(char, n*4 + 1);	40,993✔
93	if (!r)	40,993✔
94	return NULL;
95
96	for (f = s, t = r; f < s + n; f++)	1,070,426✔
97	t += cescape_char(*f, t);	1,029,433✔
98
99	*t = 0;	40,993✔
100
101	return r;	40,993✔
102	}
103
104	int cunescape_one(const char p, size_t length, char32_t ret, bool *eight_bit, bool accept_nul) {	10,766✔
105	int r = 1;	10,766✔
106
107	assert(p);	10,766✔
108	assert(ret);	10,766✔
109	assert(eight_bit);	10,766✔
110
111	/* Unescapes C style. Returns the unescaped character in ret.
112	* Sets *eight_bit to true if the escaped sequence either fits in
113	* one byte in UTF-8 or is a non-unicode literal byte and should
114	* instead be copied directly.
115	*/
116
117	if (length != SIZE_MAX && length < 1)	10,766✔
118	return -EINVAL;
119
120	switch (p[0]) {	10,766✔
121
122	case 'a':	4✔
123	*ret = '\a';	4✔
124	break;	4✔
125	case 'b':	8✔
126	*ret = '\b';	8✔
127	break;	8✔
128	case 'f':	3✔
129	*ret = '\f';	3✔
130	break;	3✔
131	case 'n':	22✔
132	*ret = '\n';	22✔
133	break;	22✔
134	case 'r':	4✔
135	*ret = '\r';	4✔
136	break;	4✔
137	case 't':	6✔
138	*ret = '\t';	6✔
139	break;	6✔
140	case 'v':	3✔
141	*ret = '\v';	3✔
142	break;	3✔
143	case '\\':	43✔
144	*ret = '\\';	43✔
145	break;	43✔
146	case '"':	13✔
147	*ret = '"';	13✔
148	break;	13✔
149	case '\'':	1✔
150	*ret = '\'';	1✔
151	break;	1✔
152
153	case 's':	3✔
154	/* This is an extension of the XDG syntax files */
155	*ret = ' ';	3✔
156	break;	3✔
157
158	case 'x': {	10,574✔
159	/* hexadecimal encoding */
160	int a, b;	10,574✔
161
162	if (length != SIZE_MAX && length < 3)	10,574✔
163	return -EINVAL;
164
165	a = unhexchar(p[1]);	10,570✔
166	if (a < 0)	10,570✔
167	return -EINVAL;
168
169	b = unhexchar(p[2]);	10,568✔
170	if (b < 0)	10,568✔
171	return -EINVAL;
172
173	/* Don't allow NUL bytes */
174	if (a == 0 && b == 0 && !accept_nul)	10,568✔
175	return -EINVAL;
176
177	*ret = (a << 4U) \| b;	10,567✔
178	*eight_bit = true;	10,567✔
179	r = 3;	10,567✔
180	break;	10,567✔
181	}
182
183	case 'u': {	19✔
184	/* C++11 style 16-bit unicode */
185
186	int a[4];	19✔
187	size_t i;	19✔
188	uint32_t c;	19✔
189
190	if (length != SIZE_MAX && length < 5)	19✔
191	return -EINVAL;	1✔
192
193	for (i = 0; i < 4; i++) {	95✔
194	a[i] = unhexchar(p[1 + i]);	76✔
195	if (a[i] < 0)	76✔
196	return a[i];
197	}
198
199	c = ((uint32_t) a[0] << 12U) \| ((uint32_t) a[1] << 8U) \| ((uint32_t) a[2] << 4U) \| (uint32_t) a[3];	19✔
200
201	/* Don't allow 0 chars */
202	if (c == 0 && !accept_nul)	19✔
203	return -EINVAL;
204
205	*ret = c;	18✔
206	r = 5;	18✔
207	break;	18✔
208	}
209
210	case 'U': {	10✔
211	/* C++11 style 32-bit unicode */
212
213	int a[8];	10✔
214	size_t i;	10✔
215	char32_t c;	10✔
216
217	if (length != SIZE_MAX && length < 9)	10✔
218	return -EINVAL;	×
219
220	for (i = 0; i < 8; i++) {	90✔
221	a[i] = unhexchar(p[1 + i]);	80✔
222	if (a[i] < 0)	80✔
223	return a[i];
224	}
225
226	c = ((uint32_t) a[0] << 28U) \| ((uint32_t) a[1] << 24U) \| ((uint32_t) a[2] << 20U) \| ((uint32_t) a[3] << 16U) \|	10✔
227	((uint32_t) a[4] << 12U) \| ((uint32_t) a[5] << 8U) \| ((uint32_t) a[6] << 4U) \| (uint32_t) a[7];	10✔
228
229	/* Don't allow 0 chars */
230	if (c == 0 && !accept_nul)	10✔
231	return -EINVAL;
232
233	/* Don't allow invalid code points */
234	if (!unichar_is_valid(c))	10✔
235	return -EINVAL;
236
237	*ret = c;	10✔
238	r = 9;	10✔
239	break;	10✔
240	}
241
242	case '0':	20✔
243	case '1':
244	case '2':
245	case '3':
246	case '4':
247	case '5':
248	case '6':
249	case '7': {
250	/* octal encoding */
251	int a, b, c;	20✔
252	char32_t m;	20✔
253
254	if (length != SIZE_MAX && length < 3)	20✔
255	return -EINVAL;
256
257	a = unoctchar(p[0]);	16✔
258	if (a < 0)	16✔
259	return -EINVAL;
260
261	b = unoctchar(p[1]);	16✔
262	if (b < 0)	16✔
263	return -EINVAL;
264
265	c = unoctchar(p[2]);	16✔
266	if (c < 0)	16✔
267	return -EINVAL;
268
269	/* don't allow NUL bytes */
270	if (a == 0 && b == 0 && c == 0 && !accept_nul)	16✔
271	return -EINVAL;
272
273	/* Don't allow bytes above 255 */
274	m = ((uint32_t) a << 6U) \| ((uint32_t) b << 3U) \| (uint32_t) c;	14✔
275	if (m > 255)	14✔
276	return -EINVAL;
277
278	*ret = m;	14✔
279	*eight_bit = true;	14✔
280	r = 3;	14✔
281	break;	14✔
282	}
283
284	default:
285	return -EINVAL;
286	}
287
288	return r;
289	}
290
291	ssize_t cunescape_length_with_prefix(const char s, size_t length, const char prefix, UnescapeFlags flags, char **ret) {	137,312✔
292	_cleanup_free_ char *ans = NULL;	137,312✔
293	char *t;	137,312✔
294	const char *f;	137,312✔
295	size_t pl;	137,312✔
296	int r;	137,312✔
297
298	assert(s);	137,312✔
299	assert(ret);	137,312✔
300
301	/* Undoes C style string escaping, and optionally prefixes it. */
302
303	if (length == SIZE_MAX)	137,312✔
304	length = strlen(s);	107,976✔
305
306	pl = strlen_ptr(prefix);	137,312✔
307
308	ans = new(char, pl+length+1);	137,312✔
309	if (!ans)	137,312✔
310	return -ENOMEM;
311
312	if (prefix)	137,312✔
313	memcpy(ans, prefix, pl);	29,295✔
314
315	for (f = s, t = ans + pl; f < s + length; f++) {	4,794,941✔
316	size_t remaining;	4,657,638✔
317	bool eight_bit = false;	4,657,638✔
318	char32_t u;	4,657,638✔
319
320	remaining = s + length - f;	4,657,638✔
321	assert(remaining > 0);	4,657,638✔
322
323	if (*f != '\\') {	4,657,638✔
324	/* A literal, copy verbatim */
325	(t++) = f;	4,646,955✔
326	continue;	4,646,962✔
327	}
328
329	if (remaining == 1) {	10,683✔
330	if (flags & UNESCAPE_RELAX) {	3✔
331	/* A trailing backslash, copy verbatim */
332	(t++) = f;	1✔
333	continue;	1✔
334	}
335
336	return -EINVAL;	9✔
337	}
338
339	r = cunescape_one(f + 1, remaining - 1, &u, &eight_bit, flags & UNESCAPE_ACCEPT_NUL);	10,680✔
340	if (r < 0) {	10,680✔
341	if (flags & UNESCAPE_RELAX) {	13✔
342	/* Invalid escape code, let's take it literal then */
343	*(t++) = '\\';	6✔
344	continue;	6✔
345	}
346
347	return r;	7✔
348	}
349
350	f += r;	10,667✔
351	if (eight_bit)	10,667✔
352	/* One byte? Set directly as specified */
353	*(t++) = u;	10,568✔
354	else
355	/* Otherwise encode as multi-byte UTF-8 */
356	t += utf8_encode_unichar(t, u);	99✔
357	}
358
359	*t = 0;	137,303✔
360
361	assert(t >= ans); /* Let static analyzers know that the answer is non-negative. */	137,303✔
362	*ret = TAKE_PTR(ans);	137,303✔
363	return t - *ret;	137,303✔
364	}
365
366	char* xescape_full(const char s, const char bad, size_t console_width, XEscapeFlags flags) {	103,488✔
367	char ans, t, prev, prev2;	103,488✔
368	const char *f;	103,488✔
369
370	assert(s);	103,488✔
371
372	/* Escapes all chars in bad, in addition to \ and all special chars, in \xFF style escaping. May be
373	* reversed with cunescape(). If XESCAPE_8_BIT is specified, characters >= 127 are let through
374	* unchanged. This corresponds to non-ASCII printable characters in pre-unicode encodings.
375	*
376	* If console_width is reached, or XESCAPE_FORCE_ELLIPSIS is set, output is truncated and "..." is
377	* appended. */
378
379	if (console_width == 0)	103,488✔
380	return strdup("");	4✔
381
382	size_t body = MIN(strlen(s), console_width) * 4;	103,484✔
383	ans = new(char, body + STRLEN("...") + 1);	103,484✔
384	if (!ans)	103,484✔
385	return NULL;
386
387	memset(ans, '_', body);	103,484✔
388	ans[body] = 0;	103,484✔
389
390	bool force_ellipsis = FLAGS_SET(flags, XESCAPE_FORCE_ELLIPSIS);	103,484✔
391
392	for (f = s, t = prev = prev2 = ans; ; f++) {	103,484✔
393	char *tmp_t = t;	6,211,972✔
394
395	if (!*f) {	6,211,972✔
396	if (force_ellipsis)	103,280✔
397	break;
398
399	*t = 0;	103,266✔
400	return ans;	103,266✔
401	}
402
403	if ((unsigned char) *f < ' ' \|\|	6,108,692✔
404	(!FLAGS_SET(flags, XESCAPE_8_BIT) && (unsigned char) *f >= 127) \|\|	6,107,523✔
405	f == '\\' \|\| (bad && strchr(bad, f))) {	6,106,610✔
406	if ((size_t) (t - ans) + 4 + 3 * force_ellipsis > console_width)	10,899✔
407	break;
408
409	*(t++) = '\\';	10,715✔
410	*(t++) = 'x';	10,715✔
411	(t++) = hexchar(f >> 4);	10,715✔
412	(t++) = hexchar(f);	10,715✔
413	} else {
414	if ((size_t) (t - ans) + 1 + 3 * force_ellipsis > console_width)	6,097,793✔
415	break;
416
417	(t++) = f;	6,097,773✔
418	}
419
420	/* We might need to go back two cycles to fit three dots, so remember two positions */
421	prev2 = prev;	6,108,488✔
422	prev = tmp_t;	6,108,488✔
423	}
424
425	/* We can just write where we want, since chars are one-byte */
426	size_t c = MIN(console_width, 3u); /* If the console is too narrow, write fewer dots */	218✔
427	size_t off;	218✔
428	if (console_width - c >= (size_t) (t - ans))	218✔
429	off = (size_t) (t - ans);
430	else if (console_width - c >= (size_t) (prev - ans))	76✔
431	off = (size_t) (prev - ans);
432	else if (console_width - c >= (size_t) (prev2 - ans))	10✔
433	off = (size_t) (prev2 - ans);
434	else
435	off = console_width - c;	1✔
436	assert(off <= (size_t) (t - ans));	218✔
437
438	memcpy(ans + off, "...", c);	218✔
439	ans[off + c] = '\0';	218✔
440	return ans;	218✔
441	}
442
443	char* escape_non_printable_full(const char *str, size_t console_width, XEscapeFlags flags) {	340✔
444	if (FLAGS_SET(flags, XESCAPE_8_BIT))	340✔
445	return xescape_full(str, /* bad= */ NULL, console_width, flags);	×
446	else
447	return utf8_escape_non_printable_full(str,	340✔
448	console_width,
449	FLAGS_SET(flags, XESCAPE_FORCE_ELLIPSIS));	340✔
450	}
451
452	char* octescape_full(const char s, size_t len, const char bad) {	80✔
453	char buf, t;	80✔
454
455	/* Escapes all chars in bad, in addition to \ and " chars, in \nnn octal style escaping. */
456
457	assert(s \|\| len == 0);	80✔
458
459	if (len == SIZE_MAX)	80✔
460	len = strlen(s);	27✔
461
462	if (len > (SIZE_MAX - 1) / 4)	80✔
463	return NULL;
464
465	t = buf = new(char, len * 4 + 1);	80✔
466	if (!buf)	80✔
467	return NULL;
468
469	for (size_t i = 0; i < len; i++) {	908✔
470	uint8_t u = (uint8_t) s[i];	828✔
471
472	if (u < ' ' \|\| u >= 127 \|\| IN_SET(u, '\\', '"') \|\| (bad && strchr(bad, u))) {	828✔
473	*(t++) = '\\';	5✔
474	*(t++) = '0' + (u >> 6);	5✔
475	*(t++) = '0' + ((u >> 3) & 7);	5✔
476	*(t++) = '0' + (u & 7);	5✔
477	} else
478	*(t++) = u;	823✔
479	}
480
481	*t = 0;	80✔
482	return buf;	80✔
483	}
484
485	char* decescape(const char s, size_t len, const char bad) {	8✔
486	char buf, t;	8✔
487
488	/* Escapes all chars in bad, in addition to \ and " chars, in \nnn decimal style escaping. */
489
490	assert(s \|\| len == 0);	8✔
491
492	if (len == SIZE_MAX)	8✔
493	len = strlen(s);	6✔
494
495	if (len > (SIZE_MAX - 1) / 4)	8✔
496	return NULL;
497
498	t = buf = new(char, len * 4 + 1);	8✔
499	if (!buf)	8✔
500	return NULL;
501
502	for (size_t i = 0; i < len; i++) {	47✔
503	uint8_t u = (uint8_t) s[i];	39✔
504
505	if (u < ' ' \|\| u >= 127 \|\| IN_SET(u, '\\', '"') \|\| strchr(bad, u)) {	39✔
506	*(t++) = '\\';	20✔
507	*(t++) = '0' + (u / 100);	20✔
508	*(t++) = '0' + ((u / 10) % 10);	20✔
509	*(t++) = '0' + (u % 10);	20✔
510	} else
511	*(t++) = u;	19✔
512	}
513
514	*t = 0;	8✔
515	return buf;	8✔
516	}
517
518	static char* strcpy_backslash_escaped(char t, const char s, const char *bad) {	191,130✔
519	assert(bad);	191,130✔
520	assert(t);	191,130✔
521	assert(s);	191,130✔
522
523	while (*s) {	3,711,250✔
524	int l = utf8_encoded_valid_unichar(s, SIZE_MAX);	3,520,120✔
525
526	if (char_is_cc(*s) \|\| l < 0)	3,520,120✔
527	t += cescape_char(*(s++), t);	16,563✔
528	else if (l == 1) {	3,503,557✔
529	if (s == '\\' \|\| strchr(bad, s))	3,503,551✔
530	*(t++) = '\\';	4,405✔
531	(t++) = (s++);	3,503,551✔
532	} else {
533	t = mempcpy(t, s, l);	6✔
534	s += l;	6✔
535	}
536	}
537
538	return t;	191,130✔
539	}
540
541	char* shell_escape(const char s, const char bad) {	186,233✔
542	char buf, t;	186,233✔
543
544	buf = new(char, strlen(s)*4+1);	186,233✔
545	if (!buf)	186,233✔
546	return NULL;
547
548	t = strcpy_backslash_escaped(buf, s, bad);	186,233✔
549	*t = 0;	186,233✔
550
551	return buf;	186,233✔
552	}
553
554	char* shell_maybe_quote(const char *s, ShellEscapeFlags flags) {	92,669✔
555	const char *p;	92,669✔
556	char buf, t;	92,669✔
557
558	assert(s);	92,669✔
559
560	/* Encloses a string in quotes if necessary to make it OK as a shell string. */
561
562	if (FLAGS_SET(flags, SHELL_ESCAPE_EMPTY) && isempty(s))	92,669✔
563	return strdup("\"\""); /* We don't use $'' here in the POSIX mode. "" is fine too. */	567✔
564
565	for (p = s; *p; ) {	1,901,221✔
566	int l = utf8_encoded_valid_unichar(p, SIZE_MAX);	1,814,016✔
567
568	if (char_is_cc(*p) \|\| l < 0 \|\|	1,814,016✔
569	strchr(WHITESPACE SHELL_NEED_QUOTES, *p))	1,813,980✔
570	break;
571
572	p += l;	1,809,119✔
573	}
574
575	if (!*p)	92,102✔
576	return strdup(s);	87,205✔
577
578	buf = new(char, FLAGS_SET(flags, SHELL_ESCAPE_POSIX) + 1 + strlen(s)*4 + 1 + 1);	9,722✔
579	if (!buf)	4,897✔
580	return NULL;
581
582	t = buf;	4,897✔
583	if (FLAGS_SET(flags, SHELL_ESCAPE_POSIX)) {	4,897✔
584	*(t++) = '$';	72✔
585	*(t++) = '\'';	72✔
586	} else
587	*(t++) = '"';	4,825✔
588
589	t = mempcpy(t, s, p - s);	4,897✔
590
591	t = strcpy_backslash_escaped(t, p,	9,722✔
592	FLAGS_SET(flags, SHELL_ESCAPE_POSIX) ? SHELL_NEED_ESCAPE_POSIX : SHELL_NEED_ESCAPE);
593
594	if (FLAGS_SET(flags, SHELL_ESCAPE_POSIX))	4,897✔
595	*(t++) = '\'';	72✔
596	else
597	*(t++) = '"';	4,825✔
598	*t = 0;	4,897✔
599
600	return str_realloc(buf);	4,897✔
601	}
602
603	char* quote_command_line(char * const *argv, ShellEscapeFlags flags) {	30,549✔
604	_cleanup_free_ char *result = NULL;	30,549✔
605
606	assert(argv);	30,549✔
607
608	STRV_FOREACH(a, argv) {	122,283✔
609	_cleanup_free_ char *t = NULL;	91,734✔
610
611	t = shell_maybe_quote(*a, flags);	91,734✔
612	if (!t)	91,734✔
613	return NULL;
614
615	if (!strextend_with_separator(&result, " ", t))	91,734✔
616	return NULL;
617	}
618
619	return str_realloc(TAKE_PTR(result));	30,549✔
620	}

systemd / systemd / 27728979565

Source File Press 'n' to go to next uncovered line, 'b' for previous

Source File
Press 'n' to go to next uncovered line, 'b' for previous