[thirdparty/systemd.git] / src / shared / pretty-print.c

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

#include <sys/utsname.h>
#include <errno.h>
#include <stdio.h>

#include "alloc-util.h"
#include "color-util.h"
#include "conf-files.h"
#include "constants.h"
#include "env-util.h"
#include "fd-util.h"
#include "fileio.h"
#include "pager.h"
#include "path-util.h"
#include "pretty-print.h"
#include "string-util.h"
#include "strv.h"
#include "terminal-util.h"

void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
        char *p = buffer;

        assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
        assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */

        if (pos > 1) {
                if (pos > 2)
                        p = mempset(p, ' ', pos-2);
                if (log_get_show_color())
                        p = stpcpy(p, ANSI_RED);
                *p++ = '*';
        }

        if (pos > 0 && pos <= width) {
                if (log_get_show_color())
                        p = stpcpy(p, ANSI_HIGHLIGHT_RED);
                *p++ = '*';
        }

        if (log_get_show_color())
                p = stpcpy(p, ANSI_NORMAL);

        if (pos < width) {
                if (log_get_show_color())
                        p = stpcpy(p, ANSI_RED);
                *p++ = '*';
                if (pos < width-1)
                        p = mempset(p, ' ', width-1-pos);
                if (log_get_show_color())
                        p = stpcpy(p, ANSI_NORMAL);
        }

        *p = '\0';
}

bool urlify_enabled(void) {
#if ENABLE_URLIFY
        static int cached_urlify_enabled = -1;

        if (cached_urlify_enabled < 0) {
                int val;

                val = getenv_bool("SYSTEMD_URLIFY");
                if (val >= 0)
                        cached_urlify_enabled = val;
                else
                        cached_urlify_enabled = colors_enabled();
        }

        return cached_urlify_enabled;
#else
        return 0;
#endif
}

int terminal_urlify(const char *url, const char *text, char **ret) {
        char *n;

        assert(url);

        /* Takes a URL and a pretty string and formats it as clickable link for the terminal. See
         * https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda for details. */

        if (isempty(text))
                text = url;

        if (urlify_enabled())
                n = strjoin("\x1B]8;;", url, "\a", text, "\x1B]8;;\a");
        else
                n = strdup(text);
        if (!n)
                return -ENOMEM;

        *ret = n;
        return 0;
}

int file_url_from_path(const char *path, char **ret) {
        _cleanup_free_ char *absolute = NULL;
        struct utsname u;
        char *url = NULL;
        int r;

        if (uname(&u) < 0)
                return -errno;

        if (!path_is_absolute(path)) {
                r = path_make_absolute_cwd(path, &absolute);
                if (r < 0)
                        return r;

                path = absolute;
        }

        /* As suggested by https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda, let's include the local
         * hostname here. Note that we don't use gethostname_malloc() or gethostname_strict() since we are interested
         * in the raw string the kernel has set, whatever it may be, under the assumption that terminals are not overly
         * careful with validating the strings either. */

        url = strjoin("file://", u.nodename, path);
        if (!url)
                return -ENOMEM;

        *ret = url;
        return 0;
}

int terminal_urlify_path(const char *path, const char *text, char **ret) {
        _cleanup_free_ char *url = NULL;
        int r;

        assert(path);

        /* Much like terminal_urlify() above, but takes a file system path as input
         * and turns it into a proper file:// URL first. */

        if (isempty(path))
                return -EINVAL;

        if (isempty(text))
                text = path;

        if (!urlify_enabled()) {
                char *n;

                n = strdup(text);
                if (!n)
                        return -ENOMEM;

                *ret = n;
                return 0;
        }

        r = file_url_from_path(path, &url);
        if (r < 0)
                return r;

        return terminal_urlify(url, text, ret);
}

int terminal_urlify_man(const char *page, const char *section, char **ret) {
        const char *url, *text;

        url = strjoina("man:", page, "(", section, ")");
        text = strjoina(page, "(", section, ") man page");

        return terminal_urlify(url, text, ret);
}

typedef enum {
        LINE_SECTION,
        LINE_COMMENT,
        LINE_NORMAL,
} LineType;

static LineType classify_line_type(const char *line, CatFlags flags) {
        const char *t = skip_leading_chars(line, WHITESPACE);

        if ((flags & CAT_FORMAT_HAS_SECTIONS) && *t == '[')
                return LINE_SECTION;
        if (IN_SET(*t, '#', ';', '\0'))
                return LINE_COMMENT;
        return LINE_NORMAL;
}

static int cat_file(const char *filename, bool newline, CatFlags flags) {
        _cleanup_fclose_ FILE *f = NULL;
        _cleanup_free_ char *urlified = NULL, *section = NULL, *old_section = NULL;
        int r;

        f = fopen(filename, "re");
        if (!f)
                return -errno;

        r = terminal_urlify_path(filename, NULL, &urlified);
        if (r < 0)
                return r;

        printf("%s%s# %s%s\n",
               newline ? "\n" : "",
               ansi_highlight_blue(),
               urlified,
               ansi_normal());
        fflush(stdout);

        for (;;) {
                _cleanup_free_ char *line = NULL;

                r = read_line(f, LONG_LINE_MAX, &line);
                if (r < 0)
                        return log_error_errno(r, "Failed to read \"%s\": %m", filename);
                if (r == 0)
                        break;

                LineType line_type = classify_line_type(line, flags);
                if (FLAGS_SET(flags, CAT_TLDR)) {
                        if (line_type == LINE_SECTION) {
                                /* The start of a section, let's not print it yet. */
                                free_and_replace(section, line);
                                continue;
                        }

                        if (line_type == LINE_COMMENT)
                                continue;

                        /* Before we print the actual line, print the last section header */
                        if (section) {
                                /* Do not print redundant section headers */
                                if (!streq_ptr(section, old_section))
                                        printf("%s%s%s\n",
                                               ansi_highlight_cyan(),
                                               section,
                                               ansi_normal());

                                free_and_replace(old_section, section);
                        }
                }

                /* Highlight the left side (directive) of a Foo=bar assignment */
                if (FLAGS_SET(flags, CAT_FORMAT_HAS_SECTIONS) && line_type == LINE_NORMAL) {
                        const char *p = strchr(line, '=');
                        if (p) {
                                _cleanup_free_ char *highlighted = NULL, *directive = NULL;

                                directive = strndup(line, p - line);
                                if (!directive)
                                        return log_oom();

                                highlighted = strjoin(ansi_highlight_green(),
                                                      directive,
                                                      "=",
                                                      ansi_normal(),
                                                      p + 1);
                                if (!highlighted)
                                        return log_oom();

                                free_and_replace(line, highlighted);
                        }
                }

                printf("%s%s%s\n",
                       line_type == LINE_SECTION ? ansi_highlight_cyan() :
                       line_type == LINE_COMMENT ? ansi_highlight_grey() :
                       "",
                       line,
                       line_type != LINE_NORMAL ? ansi_normal() : "");
        }

        return 0;
}

int cat_files(const char *file, char **dropins, CatFlags flags) {
        int r;

        if (file) {
                r = cat_file(file, /* newline= */ false, flags);
                if (r < 0)
                        return log_warning_errno(r, "Failed to cat %s: %m", file);
        }

        STRV_FOREACH(path, dropins) {
                r = cat_file(*path, /* newline= */ file || path != dropins, flags);
                if (r < 0)
                        return log_warning_errno(r, "Failed to cat %s: %m", *path);
        }

        return 0;
}

void print_separator(void) {

        /* Outputs a separator line that resolves to whitespace when copied from the terminal. We do that by outputting
         * one line filled with spaces with ANSI underline set, followed by a second (empty) line. */

        if (underline_enabled()) {
                size_t c = columns();

                flockfile(stdout);
                fputs_unlocked(ANSI_UNDERLINE, stdout);

                for (size_t i = 0; i < c; i++)
                        fputc_unlocked(' ', stdout);

                fputs_unlocked(ANSI_NORMAL "\n\n", stdout);
                funlockfile(stdout);
        } else
                fputs("\n\n", stdout);
}

static int guess_type(const char **name, char ***prefixes, bool *is_collection, const char **extension) {
        /* Try to figure out if name is like tmpfiles.d/ or systemd/system-presets/,
         * i.e. a collection of directories without a main config file.
         * Incidentally, all those formats don't use sections. So we return a single
         * is_collection boolean, which also means that the format doesn't use sections.
         */

        _cleanup_free_ char *n = NULL;
        bool usr = false, run = false, coll = false;
        const char *ext = ".conf";
        /* This is static so that the array doesn't get deallocated when we exit the function */
        static const char* const std_prefixes[] = { CONF_PATHS(""), NULL };
        static const char* const usr_prefixes[] = { CONF_PATHS_USR(""), NULL };
        static const char* const run_prefixes[] = { "/run/", NULL };

        if (path_equal(*name, "environment.d"))
                /* Special case: we need to include /etc/environment in the search path, even
                 * though the whole concept is called environment.d. */
                *name = "environment";

        n = strdup(*name);
        if (!n)
                return log_oom();

        /* All systemd-style config files should support the /usr-/etc-/run split and
         * dropins. Let's add a blanket rule that allows us to support them without keeping
         * an explicit list. */
        if (path_startswith(n, "systemd") && endswith(n, ".conf"))
                usr = true;

        delete_trailing_chars(n, "/");

        if (endswith(n, ".d"))
                coll = true;

        if (path_equal(n, "environment"))
                usr = true;

        if (path_equal(n, "udev/hwdb.d"))
                ext = ".hwdb";
        else if (path_equal(n, "udev/rules.d"))
                ext = ".rules";
        else if (path_equal(n, "kernel/install.d"))
                ext = ".install";
        else if (path_equal(n, "systemd/ntp-units.d")) {
                coll = true;
                ext = ".list";
        } else if (path_equal(n, "systemd/relabel-extra.d")) {
                coll = run = true;
                ext = ".relabel";
        } else if (PATH_IN_SET(n, "systemd/system-preset", "systemd/user-preset")) {
                coll = true;
                ext = ".preset";
        }

        if (path_equal(n, "systemd/user-preset"))
                usr = true;

        *prefixes = (char**) (usr ? usr_prefixes : run ? run_prefixes : std_prefixes);
        *is_collection = coll;
        *extension = ext;
        return 0;
}

int conf_files_cat(const char *root, const char *name, CatFlags flags) {
        _cleanup_strv_free_ char **dirs = NULL, **files = NULL;
        _cleanup_free_ char *path = NULL;
        char **prefixes = NULL; /* explicit initialization to appease gcc */
        bool is_collection;
        const char *extension;
        int r;

        r = guess_type(&name, &prefixes, &is_collection, &extension);
        if (r < 0)
                return r;
        assert(prefixes);
        assert(extension);

        STRV_FOREACH(prefix, prefixes) {
                assert(endswith(*prefix, "/"));
                r = strv_extendf(&dirs, "%s%s%s", *prefix, name,
                                 is_collection ? "" : ".d");
                if (r < 0)
                        return log_error_errno(r, "Failed to build directory list: %m");
        }

        if (DEBUG_LOGGING) {
                log_debug("Looking for configuration in:");
                if (!is_collection)
                        STRV_FOREACH(prefix, prefixes)
                                log_debug("   %s%s%s", strempty(root), *prefix, name);

                STRV_FOREACH(t, dirs)
                        log_debug("   %s%s/*%s", strempty(root), *t, extension);
        }

        /* First locate the main config file, if any */
        if (!is_collection) {
                STRV_FOREACH(prefix, prefixes) {
                        path = path_join(root, *prefix, name);
                        if (!path)
                                return log_oom();
                        if (access(path, F_OK) == 0)
                                break;
                        path = mfree(path);
                }

                if (!path)
                        printf("%s# Main configuration file %s not found%s\n",
                               ansi_highlight_magenta(),
                               name,
                               ansi_normal());
        }

        /* Then locate the drop-ins, if any */
        r = conf_files_list_strv(&files, extension, root, 0, (const char* const*) dirs);
        if (r < 0)
                return log_error_errno(r, "Failed to query file list: %m");

        /* Show */
        if (is_collection)
                flags |= CAT_FORMAT_HAS_SECTIONS;

        return cat_files(path, files, flags);
}

int terminal_tint_color(double hue, char **ret) {
        double red, green, blue;
        int r;

        assert(ret);

        r = get_default_background_color(&red, &green, &blue);
        if (r < 0)
                return log_debug_errno(r, "Unable to get terminal background color: %m");

        double s, v;
        rgb_to_hsv(red, green, blue, /* h= */ NULL, &s, &v);

        if (v > 50) /* If the background is bright, then pull down saturation */
                s = 25;
        else        /* otherwise pump it up */
                s = 75;

        v = MAX(20, v); /* Make sure we don't hide the color in black */

        uint8_t r8, g8, b8;
        hsv_to_rgb(hue, s, v, &r8, &g8, &b8);

        if (asprintf(ret, "48;2;%u;%u;%u", r8, g8, b8) < 0)
                return -ENOMEM;

        return 0;
}
Commit	Line	Data
db9ecf05	1	/* SPDX-License-Identifier: LGPL-2.1-or-later */
294bf0c3 ZJS	2
	3	#include <sys/utsname.h>
	4	#include <errno.h>
	5	#include <stdio.h>
	6
	7	#include "alloc-util.h"
3ef072ee	8	#include "color-util.h"
294bf0c3	9	#include "conf-files.h"
28db6fbf	10	#include "constants.h"
294bf0c3 ZJS	11	#include "env-util.h"
	12	#include "fd-util.h"
	13	#include "fileio.h"
	14	#include "pager.h"
	15	#include "path-util.h"
	16	#include "pretty-print.h"
	17	#include "string-util.h"
	18	#include "strv.h"
	19	#include "terminal-util.h"
294bf0c3	20
d61a4dbb YW	21	void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
	22	char *p = buffer;
	23
	24	assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
	25	assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
	26
	27	if (pos > 1) {
	28	if (pos > 2)
	29	p = mempset(p, ' ', pos-2);
	30	if (log_get_show_color())
	31	p = stpcpy(p, ANSI_RED);
	32	p++ = '';
	33	}
	34
	35	if (pos > 0 && pos <= width) {
	36	if (log_get_show_color())
	37	p = stpcpy(p, ANSI_HIGHLIGHT_RED);
	38	p++ = '';
	39	}
	40
	41	if (log_get_show_color())
	42	p = stpcpy(p, ANSI_NORMAL);
	43
	44	if (pos < width) {
	45	if (log_get_show_color())
	46	p = stpcpy(p, ANSI_RED);
	47	p++ = '';
	48	if (pos < width-1)
	49	p = mempset(p, ' ', width-1-pos);
	50	if (log_get_show_color())
	51	p = stpcpy(p, ANSI_NORMAL);
	52	}
	53
	54	*p = '\0';
	55	}
	56
422c8251	57	bool urlify_enabled(void) {
e5d86ebe	58	#if ENABLE_URLIFY
294bf0c3 ZJS	59	static int cached_urlify_enabled = -1;
294bf0c3 ZJS	60
294bf0c3 ZJS	61	if (cached_urlify_enabled < 0) {
	62	int val;
	63
	64	val = getenv_bool("SYSTEMD_URLIFY");
	65	if (val >= 0)
	66	cached_urlify_enabled = val;
	67	else
ebef02dd	68	cached_urlify_enabled = colors_enabled();
294bf0c3 ZJS	69	}
	70
	71	return cached_urlify_enabled;
e5d86ebe JH	72	#else
	73	return 0;
	74	#endif
294bf0c3 ZJS	75	}
	76
	77	int terminal_urlify(const char url, const char text, char **ret) {
	78	char *n;
	79
	80	assert(url);
	81
5bc9ea07	82	/* Takes a URL and a pretty string and formats it as clickable link for the terminal. See
294bf0c3 ZJS	83	* https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda for details. */
	84
	85	if (isempty(text))
	86	text = url;
	87
	88	if (urlify_enabled())
	89	n = strjoin("\x1B]8;;", url, "\a", text, "\x1B]8;;\a");
	90	else
	91	n = strdup(text);
	92	if (!n)
	93	return -ENOMEM;
	94
	95	*ret = n;
	96	return 0;
	97	}
	98
62d6a1cc	99	int file_url_from_path(const char path, char *ret) {
294bf0c3 ZJS	100	_cleanup_free_ char *absolute = NULL;
294bf0c3 ZJS	101	struct utsname u;
62d6a1cc LP	102	char *url = NULL;
	103	int r;
	104
	105	if (uname(&u) < 0)
	106	return -errno;
	107
	108	if (!path_is_absolute(path)) {
	109	r = path_make_absolute_cwd(path, &absolute);
	110	if (r < 0)
	111	return r;
	112
	113	path = absolute;
	114	}
	115
	116	/* As suggested by https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda, let's include the local
	117	* hostname here. Note that we don't use gethostname_malloc() or gethostname_strict() since we are interested
	118	* in the raw string the kernel has set, whatever it may be, under the assumption that terminals are not overly
	119	* careful with validating the strings either. */
	120
	121	url = strjoin("file://", u.nodename, path);
	122	if (!url)
	123	return -ENOMEM;
	124
	125	*ret = url;
	126	return 0;
	127	}
	128
	129	int terminal_urlify_path(const char path, const char text, char **ret) {
	130	_cleanup_free_ char *url = NULL;
294bf0c3 ZJS	131	int r;
	132
	133	assert(path);
	134
	135	/* Much like terminal_urlify() above, but takes a file system path as input
	136	* and turns it into a proper file:// URL first. */
	137
	138	if (isempty(path))
	139	return -EINVAL;
	140
	141	if (isempty(text))
	142	text = path;
	143
	144	if (!urlify_enabled()) {
	145	char *n;
	146
	147	n = strdup(text);
	148	if (!n)
	149	return -ENOMEM;
	150
	151	*ret = n;
	152	return 0;
	153	}
	154
62d6a1cc LP	155	r = file_url_from_path(path, &url);
	156	if (r < 0)
	157	return r;
294bf0c3 ZJS	158
	159	return terminal_urlify(url, text, ret);
	160	}
	161
	162	int terminal_urlify_man(const char page, const char section, char **ret) {
	163	const char url, text;
	164
	165	url = strjoina("man:", page, "(", section, ")");
	166	text = strjoina(page, "(", section, ") man page");
	167
	168	return terminal_urlify(url, text, ret);
	169	}
	170
a9e68035 ZJS	171	typedef enum {
	172	LINE_SECTION,
	173	LINE_COMMENT,
	174	LINE_NORMAL,
	175	} LineType;
	176
	177	static LineType classify_line_type(const char *line, CatFlags flags) {
	178	const char *t = skip_leading_chars(line, WHITESPACE);
	179
	180	if ((flags & CAT_FORMAT_HAS_SECTIONS) && *t == '[')
	181	return LINE_SECTION;
	182	if (IN_SET(*t, '#', ';', '\0'))
	183	return LINE_COMMENT;
	184	return LINE_NORMAL;
	185	}
	186
063c8382	187	static int cat_file(const char *filename, bool newline, CatFlags flags) {
294bf0c3	188	_cleanup_fclose_ FILE *f = NULL;
c04cec12	189	_cleanup_free_ char urlified = NULL, section = NULL, *old_section = NULL;
294bf0c3 ZJS	190	int r;
	191
	192	f = fopen(filename, "re");
	193	if (!f)
	194	return -errno;
	195
	196	r = terminal_urlify_path(filename, NULL, &urlified);
	197	if (r < 0)
	198	return r;
	199
	200	printf("%s%s# %s%s\n",
	201	newline ? "\n" : "",
	202	ansi_highlight_blue(),
	203	urlified,
	204	ansi_normal());
	205	fflush(stdout);
	206
	207	for (;;) {
	208	_cleanup_free_ char *line = NULL;
	209
	210	r = read_line(f, LONG_LINE_MAX, &line);
	211	if (r < 0)
	212	return log_error_errno(r, "Failed to read \"%s\": %m", filename);
	213	if (r == 0)
	214	break;
	215
a9e68035	216	LineType line_type = classify_line_type(line, flags);
22b0b7bf	217	if (FLAGS_SET(flags, CAT_TLDR)) {
a9e68035	218	if (line_type == LINE_SECTION) {
063c8382 ZJS	219	/* The start of a section, let's not print it yet. */
	220	free_and_replace(section, line);
	221	continue;
	222	}
	223
a9e68035	224	if (line_type == LINE_COMMENT)
063c8382 ZJS	225	continue;
	226
	227	/* Before we print the actual line, print the last section header */
	228	if (section) {
c04cec12 ZJS	229	/* Do not print redundant section headers */
	230	if (!streq_ptr(section, old_section))
	231	printf("%s%s%s\n",
	232	ansi_highlight_cyan(),
	233	section,
	234	ansi_normal());
	235
	236	free_and_replace(old_section, section);
063c8382 ZJS	237	}
	238	}
	239
22b0b7bf FS	240	/* Highlight the left side (directive) of a Foo=bar assignment */
	241	if (FLAGS_SET(flags, CAT_FORMAT_HAS_SECTIONS) && line_type == LINE_NORMAL) {
	242	const char *p = strchr(line, '=');
	243	if (p) {
	244	_cleanup_free_ char highlighted = NULL, directive = NULL;
	245
	246	directive = strndup(line, p - line);
	247	if (!directive)
	248	return log_oom();
	249
	250	highlighted = strjoin(ansi_highlight_green(),
	251	directive,
	252	"=",
	253	ansi_normal(),
	254	p + 1);
	255	if (!highlighted)
	256	return log_oom();
	257
	258	free_and_replace(line, highlighted);
	259	}
	260	}
	261
a9e68035 ZJS	262	printf("%s%s%s\n",
	263	line_type == LINE_SECTION ? ansi_highlight_cyan() :
	264	line_type == LINE_COMMENT ? ansi_highlight_grey() :
	265	"",
	266	line,
	267	line_type != LINE_NORMAL ? ansi_normal() : "");
294bf0c3 ZJS	268	}
	269
	270	return 0;
	271	}
	272
	273	int cat_files(const char file, char *dropins, CatFlags flags) {
294bf0c3 ZJS	274	int r;
	275
	276	if (file) {
063c8382	277	r = cat_file(file, /* newline= */ false, flags);
80788a0b	278	if (r < 0)
294bf0c3 ZJS	279	return log_warning_errno(r, "Failed to cat %s: %m", file);
	280	}
	281
	282	STRV_FOREACH(path, dropins) {
063c8382	283	r = cat_file(path, / newline= */ file \|\| path != dropins, flags);
294bf0c3 ZJS	284	if (r < 0)
	285	return log_warning_errno(r, "Failed to cat %s: %m", *path);
	286	}
	287
	288	return 0;
	289	}
	290
	291	void print_separator(void) {
	292
	293	/* Outputs a separator line that resolves to whitespace when copied from the terminal. We do that by outputting
	294	* one line filled with spaces with ANSI underline set, followed by a second (empty) line. */
	295
	296	if (underline_enabled()) {
2673d6fa	297	size_t c = columns();
294bf0c3 ZJS	298
	299	flockfile(stdout);
	300	fputs_unlocked(ANSI_UNDERLINE, stdout);
	301
2673d6fa	302	for (size_t i = 0; i < c; i++)
294bf0c3 ZJS	303	fputc_unlocked(' ', stdout);
	304
	305	fputs_unlocked(ANSI_NORMAL "\n\n", stdout);
	306	funlockfile(stdout);
	307	} else
	308	fputs("\n\n", stdout);
	309	}
	310
81d791f1	311	static int guess_type(const char name, char prefixes, bool is_collection, const char **extension) {
f1d9d36a	312	/* Try to figure out if name is like tmpfiles.d/ or systemd/system-presets/,
063c8382 ZJS	313	* i.e. a collection of directories without a main config file.
	314	* Incidentally, all those formats don't use sections. So we return a single
	315	* is_collection boolean, which also means that the format doesn't use sections.
	316	*/
f1d9d36a ZJS	317
f1d9d36a ZJS	318	_cleanup_free_ char *n = NULL;
81d791f1	319	bool usr = false, run = false, coll = false;
f1d9d36a	320	const char *ext = ".conf";
81d791f1 ZJS	321	/* This is static so that the array doesn't get deallocated when we exit the function */
	322	static const char* const std_prefixes[] = { CONF_PATHS(""), NULL };
	323	static const char* const usr_prefixes[] = { CONF_PATHS_USR(""), NULL };
	324	static const char* const run_prefixes[] = { "/run/", NULL };
f1d9d36a ZJS	325
	326	if (path_equal(*name, "environment.d"))
	327	/* Special case: we need to include /etc/environment in the search path, even
	328	* though the whole concept is called environment.d. */
	329	*name = "environment";
	330
	331	n = strdup(*name);
	332	if (!n)
	333	return log_oom();
	334
28365e88 ZJS	335	/* All systemd-style config files should support the /usr-/etc-/run split and
	336	* dropins. Let's add a blanket rule that allows us to support them without keeping
	337	* an explicit list. */
	338	if (path_startswith(n, "systemd") && endswith(n, ".conf"))
	339	usr = true;
	340
f1d9d36a ZJS	341	delete_trailing_chars(n, "/");
	342
	343	if (endswith(n, ".d"))
	344	coll = true;
	345
	346	if (path_equal(n, "environment"))
	347	usr = true;
	348
	349	if (path_equal(n, "udev/hwdb.d"))
	350	ext = ".hwdb";
f3663c0e	351	else if (path_equal(n, "udev/rules.d"))
f1d9d36a	352	ext = ".rules";
f3663c0e	353	else if (path_equal(n, "kernel/install.d"))
ea39de2f	354	ext = ".install";
f3663c0e	355	else if (path_equal(n, "systemd/ntp-units.d")) {
afaae43b ZJS	356	coll = true;
afaae43b ZJS	357	ext = ".list";
f3663c0e	358	} else if (path_equal(n, "systemd/relabel-extra.d")) {
81d791f1 ZJS	359	coll = run = true;
81d791f1 ZJS	360	ext = ".relabel";
f3663c0e	361	} else if (PATH_IN_SET(n, "systemd/system-preset", "systemd/user-preset")) {
f1d9d36a ZJS	362	coll = true;
	363	ext = ".preset";
	364	}
	365
	366	if (path_equal(n, "systemd/user-preset"))
	367	usr = true;
	368
81d791f1	369	prefixes = (char*) (usr ? usr_prefixes : run ? run_prefixes : std_prefixes);
f1d9d36a ZJS	370	*is_collection = coll;
	371	*extension = ext;
	372	return 0;
	373	}
	374
063c8382	375	int conf_files_cat(const char root, const char name, CatFlags flags) {
294bf0c3 ZJS	376	_cleanup_strv_free_ char dirs = NULL, files = NULL;
294bf0c3 ZJS	377	_cleanup_free_ char *path = NULL;
de010b0b	378	char *prefixes = NULL; / explicit initialization to appease gcc */
81d791f1	379	bool is_collection;
f1d9d36a	380	const char *extension;
294bf0c3 ZJS	381	int r;
294bf0c3 ZJS	382
81d791f1	383	r = guess_type(&name, &prefixes, &is_collection, &extension);
f1d9d36a ZJS	384	if (r < 0)
f1d9d36a ZJS	385	return r;
1c93632e ZJS	386	assert(prefixes);
1c93632e ZJS	387	assert(extension);
f1d9d36a	388
81d791f1 ZJS	389	STRV_FOREACH(prefix, prefixes) {
	390	assert(endswith(*prefix, "/"));
	391	r = strv_extendf(&dirs, "%s%s%s", *prefix, name,
f1d9d36a	392	is_collection ? "" : ".d");
294bf0c3 ZJS	393	if (r < 0)
	394	return log_error_errno(r, "Failed to build directory list: %m");
	395	}
	396
0895e873 ZJS	397	if (DEBUG_LOGGING) {
	398	log_debug("Looking for configuration in:");
	399	if (!is_collection)
	400	STRV_FOREACH(prefix, prefixes)
	401	log_debug(" %s%s%s", strempty(root), *prefix, name);
294bf0c3	402
0895e873 ZJS	403	STRV_FOREACH(t, dirs)
	404	log_debug(" %s%s/%s", strempty(root), t, extension);
	405	}
	406
	407	/* First locate the main config file, if any */
f1d9d36a	408	if (!is_collection) {
0895e873 ZJS	409	STRV_FOREACH(prefix, prefixes) {
	410	path = path_join(root, *prefix, name);
	411	if (!path)
	412	return log_oom();
	413	if (access(path, F_OK) == 0)
	414	break;
	415	path = mfree(path);
	416	}
	417
f1d9d36a	418	if (!path)
0895e873 ZJS	419	printf("%s# Main configuration file %s not found%s\n",
	420	ansi_highlight_magenta(),
	421	name,
	422	ansi_normal());
f1d9d36a	423	}
294bf0c3	424
0895e873 ZJS	425	/* Then locate the drop-ins, if any */
	426	r = conf_files_list_strv(&files, extension, root, 0, (const char* const*) dirs);
	427	if (r < 0)
	428	return log_error_errno(r, "Failed to query file list: %m");
294bf0c3	429
0895e873	430	/* Show */
063c8382 ZJS	431	if (is_collection)
	432	flags \|= CAT_FORMAT_HAS_SECTIONS;
	433
	434	return cat_files(path, files, flags);
294bf0c3	435	}
3ef072ee LP	436
	437	int terminal_tint_color(double hue, char **ret) {
	438	double red, green, blue;
	439	int r;
	440
	441	assert(ret);
	442
	443	r = get_default_background_color(&red, &green, &blue);
	444	if (r < 0)
	445	return log_debug_errno(r, "Unable to get terminal background color: %m");
	446
	447	double s, v;
	448	rgb_to_hsv(red, green, blue, /* h= */ NULL, &s, &v);
	449
	450	if (v > 50) /* If the background is bright, then pull down saturation */
	451	s = 25;
	452	else /* otherwise pump it up */
	453	s = 75;
	454
2f7f0800	455	v = MAX(20, v); /* Make sure we don't hide the color in black */
3ef072ee LP	456
	457	uint8_t r8, g8, b8;
	458	hsv_to_rgb(hue, s, v, &r8, &g8, &b8);
	459
	460	if (asprintf(ret, "48;2;%u;%u;%u", r8, g8, b8) < 0)
	461	return -ENOMEM;
	462
	463	return 0;
	464	}