[thirdparty/systemd.git] / src / import / curl-util.c

/* SPDX-License-Identifier: LGPL-2.1+ */

#include <fcntl.h>

#include "alloc-util.h"
#include "build.h"
#include "curl-util.h"
#include "fd-util.h"
#include "locale-util.h"
#include "string-util.h"

static void curl_glue_check_finished(CurlGlue *g) {
        CURLMsg *msg;
        int k = 0;

        assert(g);

        msg = curl_multi_info_read(g->curl, &k);
        if (!msg)
                return;

        if (msg->msg != CURLMSG_DONE)
                return;

        if (g->on_finished)
                g->on_finished(g, msg->easy_handle, msg->data.result);
}

static int curl_glue_on_io(sd_event_source *s, int fd, uint32_t revents, void *userdata) {
        CurlGlue *g = userdata;
        int action, k = 0, translated_fd;

        assert(s);
        assert(g);

        translated_fd = PTR_TO_FD(hashmap_get(g->translate_fds, FD_TO_PTR(fd)));

        if (FLAGS_SET(revents, EPOLLIN | EPOLLOUT))
                action = CURL_POLL_INOUT;
        else if (revents & EPOLLIN)
                action = CURL_POLL_IN;
        else if (revents & EPOLLOUT)
                action = CURL_POLL_OUT;
        else
                action = 0;

        if (curl_multi_socket_action(g->curl, translated_fd, action, &k) != CURLM_OK)
                return log_debug_errno(SYNTHETIC_ERRNO(EINVAL),
                                       "Failed to propagate IO event.");

        curl_glue_check_finished(g);
        return 0;
}

static int curl_glue_socket_callback(CURLM *curl, curl_socket_t s, int action, void *userdata, void *socketp) {
        sd_event_source *io;
        CurlGlue *g = userdata;
        uint32_t events = 0;
        int r;

        assert(curl);
        assert(g);

        io = hashmap_get(g->ios, FD_TO_PTR(s));

        if (action == CURL_POLL_REMOVE) {
                if (io) {
                        int fd;

                        fd = sd_event_source_get_io_fd(io);
                        assert(fd >= 0);

                        sd_event_source_disable_unref(io);

                        hashmap_remove(g->ios, FD_TO_PTR(s));
                        hashmap_remove(g->translate_fds, FD_TO_PTR(fd));

                        safe_close(fd);
                }

                return 0;
        }

        r = hashmap_ensure_allocated(&g->ios, &trivial_hash_ops);
        if (r < 0) {
                log_oom();
                return -1;
        }

        r = hashmap_ensure_allocated(&g->translate_fds, &trivial_hash_ops);
        if (r < 0) {
                log_oom();
                return -1;
        }

        if (action == CURL_POLL_IN)
                events = EPOLLIN;
        else if (action == CURL_POLL_OUT)
                events = EPOLLOUT;
        else if (action == CURL_POLL_INOUT)
                events = EPOLLIN|EPOLLOUT;

        if (io) {
                if (sd_event_source_set_io_events(io, events) < 0)
                        return -1;

                if (sd_event_source_set_enabled(io, SD_EVENT_ON) < 0)
                        return -1;
        } else {
                _cleanup_close_ int fd = -1;

                /* When curl needs to remove an fd from us it closes
                 * the fd first, and only then calls into us. This is
                 * nasty, since we cannot pass the fd on to epoll()
                 * anymore. Hence, duplicate the fds here, and keep a
                 * copy for epoll which we control after use. */

                fd = fcntl(s, F_DUPFD_CLOEXEC, 3);
                if (fd < 0)
                        return -1;

                if (sd_event_add_io(g->event, &io, fd, events, curl_glue_on_io, g) < 0)
                        return -1;

                (void) sd_event_source_set_description(io, "curl-io");

                r = hashmap_put(g->ios, FD_TO_PTR(s), io);
                if (r < 0) {
                        log_oom();
                        sd_event_source_unref(io);
                        return -1;
                }

                r = hashmap_put(g->translate_fds, FD_TO_PTR(fd), FD_TO_PTR(s));
                if (r < 0) {
                        log_oom();
                        hashmap_remove(g->ios, FD_TO_PTR(s));
                        sd_event_source_unref(io);
                        return -1;
                }

                fd = -1;
        }

        return 0;
}

static int curl_glue_on_timer(sd_event_source *s, uint64_t usec, void *userdata) {
        CurlGlue *g = userdata;
        int k = 0;

        assert(s);
        assert(g);

        if (curl_multi_socket_action(g->curl, CURL_SOCKET_TIMEOUT, 0, &k) != CURLM_OK)
                return log_debug_errno(SYNTHETIC_ERRNO(EINVAL),
                                       "Failed to propagate timeout.");

        curl_glue_check_finished(g);
        return 0;
}

static int curl_glue_timer_callback(CURLM *curl, long timeout_ms, void *userdata) {
        CurlGlue *g = userdata;
        usec_t usec;

        assert(curl);
        assert(g);

        if (timeout_ms < 0) {
                if (g->timer) {
                        if (sd_event_source_set_enabled(g->timer, SD_EVENT_OFF) < 0)
                                return -1;
                }

                return 0;
        }

        usec = now(clock_boottime_or_monotonic()) + (usec_t) timeout_ms * USEC_PER_MSEC + USEC_PER_MSEC - 1;

        if (g->timer) {
                if (sd_event_source_set_time(g->timer, usec) < 0)
                        return -1;

                if (sd_event_source_set_enabled(g->timer, SD_EVENT_ONESHOT) < 0)
                        return -1;
        } else {
                if (sd_event_add_time(g->event, &g->timer, clock_boottime_or_monotonic(), usec, 0, curl_glue_on_timer, g) < 0)
                        return -1;

                (void) sd_event_source_set_description(g->timer, "curl-timer");
        }

        return 0;
}

CurlGlue *curl_glue_unref(CurlGlue *g) {
        sd_event_source *io;

        if (!g)
                return NULL;

        if (g->curl)
                curl_multi_cleanup(g->curl);

        while ((io = hashmap_steal_first(g->ios))) {
                int fd;

                fd = sd_event_source_get_io_fd(io);
                assert(fd >= 0);

                hashmap_remove(g->translate_fds, FD_TO_PTR(fd));

                safe_close(fd);
                sd_event_source_unref(io);
        }

        hashmap_free(g->ios);

        sd_event_source_unref(g->timer);
        sd_event_unref(g->event);
        return mfree(g);
}

int curl_glue_new(CurlGlue **glue, sd_event *event) {
        _cleanup_(curl_glue_unrefp) CurlGlue *g = NULL;
        _cleanup_(curl_multi_cleanupp) CURL *c = NULL;
        _cleanup_(sd_event_unrefp) sd_event *e = NULL;
        int r;

        if (event)
                e = sd_event_ref(event);
        else {
                r = sd_event_default(&e);
                if (r < 0)
                        return r;
        }

        c = curl_multi_init();
        if (!c)
                return -ENOMEM;

        g = new(CurlGlue, 1);
        if (!g)
                return -ENOMEM;

        *g = (CurlGlue) {
                .event = TAKE_PTR(e),
                .curl = TAKE_PTR(c),
        };

        if (curl_multi_setopt(g->curl, CURLMOPT_SOCKETDATA, g) != CURLM_OK)
                return -EINVAL;

        if (curl_multi_setopt(g->curl, CURLMOPT_SOCKETFUNCTION, curl_glue_socket_callback) != CURLM_OK)
                return -EINVAL;

        if (curl_multi_setopt(g->curl, CURLMOPT_TIMERDATA, g) != CURLM_OK)
                return -EINVAL;

        if (curl_multi_setopt(g->curl, CURLMOPT_TIMERFUNCTION, curl_glue_timer_callback) != CURLM_OK)
                return -EINVAL;

        *glue = TAKE_PTR(g);

        return 0;
}

int curl_glue_make(CURL **ret, const char *url, void *userdata) {
        _cleanup_(curl_easy_cleanupp) CURL *c = NULL;
        const char *useragent;

        assert(ret);
        assert(url);

        c = curl_easy_init();
        if (!c)
                return -ENOMEM;

        /* curl_easy_setopt(c, CURLOPT_VERBOSE, 1L); */

        if (curl_easy_setopt(c, CURLOPT_URL, url) != CURLE_OK)
                return -EIO;

        if (curl_easy_setopt(c, CURLOPT_PRIVATE, userdata) != CURLE_OK)
                return -EIO;

        useragent = strjoina(program_invocation_short_name, "/" GIT_VERSION);
        if (curl_easy_setopt(c, CURLOPT_USERAGENT, useragent) != CURLE_OK)
                return -EIO;

        if (curl_easy_setopt(c, CURLOPT_FOLLOWLOCATION, 1L) != CURLE_OK)
                return -EIO;

        *ret = TAKE_PTR(c);
        return 0;
}

int curl_glue_add(CurlGlue *g, CURL *c) {
        assert(g);
        assert(c);

        if (curl_multi_add_handle(g->curl, c) != CURLM_OK)
                return -EIO;

        return 0;
}

void curl_glue_remove_and_free(CurlGlue *g, CURL *c) {
        assert(g);

        if (!c)
                return;

        if (g->curl)
                curl_multi_remove_handle(g->curl, c);

        curl_easy_cleanup(c);
}

struct curl_slist *curl_slist_new(const char *first, ...) {
        struct curl_slist *l;
        va_list ap;

        if (!first)
                return NULL;

        l = curl_slist_append(NULL, first);
        if (!l)
                return NULL;

        va_start(ap, first);

        for (;;) {
                struct curl_slist *n;
                const char *i;

                i = va_arg(ap, const char*);
                if (!i)
                        break;

                n = curl_slist_append(l, i);
                if (!n) {
                        va_end(ap);
                        curl_slist_free_all(l);
                        return NULL;
                }

                l = n;
        }

        va_end(ap);
        return l;
}

int curl_header_strdup(const void *contents, size_t sz, const char *field, char **value) {
        const char *p;
        char *s;

        p = memory_startswith_no_case(contents, sz, field);
        if (!p)
                return 0;

        sz -= p - (const char*) contents;

        if (memchr(p, 0, sz))
                return 0;

        /* Skip over preceding whitespace */
        while (sz > 0 && strchr(WHITESPACE, p[0])) {
                p++;
                sz--;
        }

        /* Truncate trailing whitespace */
        while (sz > 0 && strchr(WHITESPACE, p[sz-1]))
                sz--;

        s = strndup(p, sz);
        if (!s)
                return -ENOMEM;

        *value = s;
        return 1;
}

int curl_parse_http_time(const char *t, usec_t *ret) {
        _cleanup_(freelocalep) locale_t loc = (locale_t) 0;
        const char *e;
        struct tm tm;
        time_t v;

        assert(t);
        assert(ret);

        loc = newlocale(LC_TIME_MASK, "C", (locale_t) 0);
        if (loc == (locale_t) 0)
                return -errno;

        /* RFC822 */
        e = strptime_l(t, "%a, %d %b %Y %H:%M:%S %Z", &tm, loc);
        if (!e || *e != 0)
                /* RFC 850 */
                e = strptime_l(t, "%A, %d-%b-%y %H:%M:%S %Z", &tm, loc);
        if (!e || *e != 0)
                /* ANSI C */
                e = strptime_l(t, "%a %b %d %H:%M:%S %Y", &tm, loc);
        if (!e || *e != 0)
                return -EINVAL;

        v = timegm(&tm);
        if (v == (time_t) -1)
                return -EINVAL;

        *ret = (usec_t) v * USEC_PER_SEC;
        return 0;
}
Commit	Line	Data
53e1b683	1	/* SPDX-License-Identifier: LGPL-2.1+ */
72648326	2
ca78ad1d ZJS	3	#include <fcntl.h>
ca78ad1d ZJS	4
b5efdb8a	5	#include "alloc-util.h"
681bd2c5	6	#include "build.h"
72648326	7	#include "curl-util.h"
3ffd4af2	8	#include "fd-util.h"
e520e0fc	9	#include "locale-util.h"
3ffd4af2	10	#include "string-util.h"
72648326 LP	11
	12	static void curl_glue_check_finished(CurlGlue *g) {
	13	CURLMsg *msg;
	14	int k = 0;
	15
	16	assert(g);
	17
	18	msg = curl_multi_info_read(g->curl, &k);
	19	if (!msg)
	20	return;
	21
	22	if (msg->msg != CURLMSG_DONE)
	23	return;
	24
	25	if (g->on_finished)
	26	g->on_finished(g, msg->easy_handle, msg->data.result);
	27	}
	28
	29	static int curl_glue_on_io(sd_event_source s, int fd, uint32_t revents, void userdata) {
	30	CurlGlue *g = userdata;
	31	int action, k = 0, translated_fd;
	32
	33	assert(s);
	34	assert(g);
	35
23e096cc	36	translated_fd = PTR_TO_FD(hashmap_get(g->translate_fds, FD_TO_PTR(fd)));
72648326	37
d94a24ca	38	if (FLAGS_SET(revents, EPOLLIN \| EPOLLOUT))
72648326 LP	39	action = CURL_POLL_INOUT;
	40	else if (revents & EPOLLIN)
	41	action = CURL_POLL_IN;
	42	else if (revents & EPOLLOUT)
	43	action = CURL_POLL_OUT;
	44	else
	45	action = 0;
	46
baaa35ad ZJS	47	if (curl_multi_socket_action(g->curl, translated_fd, action, &k) != CURLM_OK)
	48	return log_debug_errno(SYNTHETIC_ERRNO(EINVAL),
	49	"Failed to propagate IO event.");
72648326 LP	50
	51	curl_glue_check_finished(g);
	52	return 0;
	53	}
	54
	55	static int curl_glue_socket_callback(CURLM curl, curl_socket_t s, int action, void userdata, void *socketp) {
	56	sd_event_source *io;
	57	CurlGlue *g = userdata;
	58	uint32_t events = 0;
	59	int r;
	60
	61	assert(curl);
	62	assert(g);
	63
23e096cc	64	io = hashmap_get(g->ios, FD_TO_PTR(s));
72648326 LP	65
	66	if (action == CURL_POLL_REMOVE) {
	67	if (io) {
	68	int fd;
	69
	70	fd = sd_event_source_get_io_fd(io);
	71	assert(fd >= 0);
	72
1d3fe304	73	sd_event_source_disable_unref(io);
72648326	74
23e096cc LP	75	hashmap_remove(g->ios, FD_TO_PTR(s));
23e096cc LP	76	hashmap_remove(g->translate_fds, FD_TO_PTR(fd));
72648326 LP	77
	78	safe_close(fd);
	79	}
	80
	81	return 0;
	82	}
	83
	84	r = hashmap_ensure_allocated(&g->ios, &trivial_hash_ops);
	85	if (r < 0) {
	86	log_oom();
	87	return -1;
	88	}
	89
	90	r = hashmap_ensure_allocated(&g->translate_fds, &trivial_hash_ops);
	91	if (r < 0) {
	92	log_oom();
	93	return -1;
	94	}
	95
	96	if (action == CURL_POLL_IN)
	97	events = EPOLLIN;
	98	else if (action == CURL_POLL_OUT)
	99	events = EPOLLOUT;
	100	else if (action == CURL_POLL_INOUT)
	101	events = EPOLLIN\|EPOLLOUT;
	102
	103	if (io) {
	104	if (sd_event_source_set_io_events(io, events) < 0)
	105	return -1;
	106
	107	if (sd_event_source_set_enabled(io, SD_EVENT_ON) < 0)
	108	return -1;
	109	} else {
	110	_cleanup_close_ int fd = -1;
	111
	112	/* When curl needs to remove an fd from us it closes
	113	* the fd first, and only then calls into us. This is
	114	* nasty, since we cannot pass the fd on to epoll()
	115	* anymore. Hence, duplicate the fds here, and keep a
	116	* copy for epoll which we control after use. */
	117
	118	fd = fcntl(s, F_DUPFD_CLOEXEC, 3);
	119	if (fd < 0)
	120	return -1;
	121
	122	if (sd_event_add_io(g->event, &io, fd, events, curl_glue_on_io, g) < 0)
	123	return -1;
	124
edfd706d	125	(void) sd_event_source_set_description(io, "curl-io");
72648326	126
23e096cc	127	r = hashmap_put(g->ios, FD_TO_PTR(s), io);
72648326 LP	128	if (r < 0) {
	129	log_oom();
	130	sd_event_source_unref(io);
	131	return -1;
	132	}
	133
23e096cc	134	r = hashmap_put(g->translate_fds, FD_TO_PTR(fd), FD_TO_PTR(s));
72648326 LP	135	if (r < 0) {
72648326 LP	136	log_oom();
23e096cc	137	hashmap_remove(g->ios, FD_TO_PTR(s));
72648326 LP	138	sd_event_source_unref(io);
	139	return -1;
	140	}
	141
	142	fd = -1;
	143	}
	144
	145	return 0;
	146	}
	147
	148	static int curl_glue_on_timer(sd_event_source s, uint64_t usec, void userdata) {
	149	CurlGlue *g = userdata;
	150	int k = 0;
	151
	152	assert(s);
	153	assert(g);
	154
baaa35ad ZJS	155	if (curl_multi_socket_action(g->curl, CURL_SOCKET_TIMEOUT, 0, &k) != CURLM_OK)
	156	return log_debug_errno(SYNTHETIC_ERRNO(EINVAL),
	157	"Failed to propagate timeout.");
72648326 LP	158
	159	curl_glue_check_finished(g);
	160	return 0;
	161	}
	162
	163	static int curl_glue_timer_callback(CURLM curl, long timeout_ms, void userdata) {
	164	CurlGlue *g = userdata;
	165	usec_t usec;
	166
	167	assert(curl);
	168	assert(g);
	169
	170	if (timeout_ms < 0) {
	171	if (g->timer) {
	172	if (sd_event_source_set_enabled(g->timer, SD_EVENT_OFF) < 0)
	173	return -1;
	174	}
	175
	176	return 0;
	177	}
	178
	179	usec = now(clock_boottime_or_monotonic()) + (usec_t) timeout_ms * USEC_PER_MSEC + USEC_PER_MSEC - 1;
	180
	181	if (g->timer) {
	182	if (sd_event_source_set_time(g->timer, usec) < 0)
	183	return -1;
	184
	185	if (sd_event_source_set_enabled(g->timer, SD_EVENT_ONESHOT) < 0)
	186	return -1;
	187	} else {
	188	if (sd_event_add_time(g->event, &g->timer, clock_boottime_or_monotonic(), usec, 0, curl_glue_on_timer, g) < 0)
	189	return -1;
	190
edfd706d	191	(void) sd_event_source_set_description(g->timer, "curl-timer");
72648326 LP	192	}
	193
	194	return 0;
	195	}
	196
	197	CurlGlue curl_glue_unref(CurlGlue g) {
	198	sd_event_source *io;
	199
	200	if (!g)
	201	return NULL;
	202
	203	if (g->curl)
	204	curl_multi_cleanup(g->curl);
	205
	206	while ((io = hashmap_steal_first(g->ios))) {
	207	int fd;
	208
	209	fd = sd_event_source_get_io_fd(io);
	210	assert(fd >= 0);
	211
23e096cc	212	hashmap_remove(g->translate_fds, FD_TO_PTR(fd));
72648326 LP	213
	214	safe_close(fd);
	215	sd_event_source_unref(io);
	216	}
	217
	218	hashmap_free(g->ios);
	219
	220	sd_event_source_unref(g->timer);
	221	sd_event_unref(g->event);
6b430fdb	222	return mfree(g);
72648326 LP	223	}
	224
	225	int curl_glue_new(CurlGlue *glue, sd_event event) {
	226	_cleanup_(curl_glue_unrefp) CurlGlue *g = NULL;
0d94088e YW	227	_cleanup_(curl_multi_cleanupp) CURL *c = NULL;
0d94088e YW	228	_cleanup_(sd_event_unrefp) sd_event *e = NULL;
72648326 LP	229	int r;
72648326 LP	230
72648326	231	if (event)
0d94088e	232	e = sd_event_ref(event);
72648326	233	else {
0d94088e	234	r = sd_event_default(&e);
72648326 LP	235	if (r < 0)
	236	return r;
	237	}
	238
0d94088e YW	239	c = curl_multi_init();
0d94088e YW	240	if (!c)
72648326 LP	241	return -ENOMEM;
72648326 LP	242
0d94088e YW	243	g = new(CurlGlue, 1);
	244	if (!g)
	245	return -ENOMEM;
	246
	247	*g = (CurlGlue) {
	248	.event = TAKE_PTR(e),
	249	.curl = TAKE_PTR(c),
	250	};
	251
72648326 LP	252	if (curl_multi_setopt(g->curl, CURLMOPT_SOCKETDATA, g) != CURLM_OK)
	253	return -EINVAL;
	254
	255	if (curl_multi_setopt(g->curl, CURLMOPT_SOCKETFUNCTION, curl_glue_socket_callback) != CURLM_OK)
	256	return -EINVAL;
	257
	258	if (curl_multi_setopt(g->curl, CURLMOPT_TIMERDATA, g) != CURLM_OK)
	259	return -EINVAL;
	260
	261	if (curl_multi_setopt(g->curl, CURLMOPT_TIMERFUNCTION, curl_glue_timer_callback) != CURLM_OK)
	262	return -EINVAL;
	263
1cc6c93a	264	*glue = TAKE_PTR(g);
72648326 LP	265
	266	return 0;
	267	}
	268
	269	int curl_glue_make(CURL *ret, const char url, void *userdata) {
c3e65800	270	_cleanup_(curl_easy_cleanupp) CURL *c = NULL;
72648326	271	const char *useragent;
72648326 LP	272
	273	assert(ret);
	274	assert(url);
	275
	276	c = curl_easy_init();
	277	if (!c)
	278	return -ENOMEM;
	279
	280	/* curl_easy_setopt(c, CURLOPT_VERBOSE, 1L); */
	281
c3e65800 YW	282	if (curl_easy_setopt(c, CURLOPT_URL, url) != CURLE_OK)
c3e65800 YW	283	return -EIO;
72648326	284
c3e65800 YW	285	if (curl_easy_setopt(c, CURLOPT_PRIVATE, userdata) != CURLE_OK)
c3e65800 YW	286	return -EIO;
72648326	287
681bd2c5	288	useragent = strjoina(program_invocation_short_name, "/" GIT_VERSION);
c3e65800 YW	289	if (curl_easy_setopt(c, CURLOPT_USERAGENT, useragent) != CURLE_OK)
c3e65800 YW	290	return -EIO;
72648326	291
c3e65800 YW	292	if (curl_easy_setopt(c, CURLOPT_FOLLOWLOCATION, 1L) != CURLE_OK)
c3e65800 YW	293	return -EIO;
72648326	294
67577508	295	*ret = TAKE_PTR(c);
72648326	296	return 0;
72648326 LP	297	}
	298
	299	int curl_glue_add(CurlGlue g, CURL c) {
	300	assert(g);
	301	assert(c);
	302
	303	if (curl_multi_add_handle(g->curl, c) != CURLM_OK)
	304	return -EIO;
	305
	306	return 0;
	307	}
	308
	309	void curl_glue_remove_and_free(CurlGlue g, CURL c) {
	310	assert(g);
	311
	312	if (!c)
	313	return;
	314
	315	if (g->curl)
	316	curl_multi_remove_handle(g->curl, c);
	317
	318	curl_easy_cleanup(c);
	319	}
	320
	321	struct curl_slist curl_slist_new(const char first, ...) {
	322	struct curl_slist *l;
	323	va_list ap;
	324
	325	if (!first)
	326	return NULL;
	327
	328	l = curl_slist_append(NULL, first);
	329	if (!l)
	330	return NULL;
	331
	332	va_start(ap, first);
	333
	334	for (;;) {
	335	struct curl_slist *n;
	336	const char *i;
	337
	338	i = va_arg(ap, const char*);
	339	if (!i)
	340	break;
	341
	342	n = curl_slist_append(l, i);
	343	if (!n) {
	344	va_end(ap);
	345	curl_slist_free_all(l);
	346	return NULL;
	347	}
	348
	349	l = n;
	350	}
	351
	352	va_end(ap);
	353	return l;
	354	}
	355
	356	int curl_header_strdup(const void contents, size_t sz, const char field, char **value) {
d27b725a	357	const char *p;
72648326 LP	358	char *s;
72648326 LP	359
21224070	360	p = memory_startswith_no_case(contents, sz, field);
d27b725a	361	if (!p)
72648326 LP	362	return 0;
72648326 LP	363
d27b725a	364	sz -= p - (const char*) contents;
72648326 LP	365
	366	if (memchr(p, 0, sz))
	367	return 0;
	368
5238e957	369	/* Skip over preceding whitespace */
72648326 LP	370	while (sz > 0 && strchr(WHITESPACE, p[0])) {
	371	p++;
	372	sz--;
	373	}
	374
13e785f7	375	/* Truncate trailing whitespace */
72648326 LP	376	while (sz > 0 && strchr(WHITESPACE, p[sz-1]))
	377	sz--;
	378
	379	s = strndup(p, sz);
	380	if (!s)
	381	return -ENOMEM;
	382
	383	*value = s;
	384	return 1;
	385	}
90199220	386
5fa89b2c	387	int curl_parse_http_time(const char t, usec_t ret) {
e520e0fc	388	_cleanup_(freelocalep) locale_t loc = (locale_t) 0;
0193ad26	389	const char *e;
90199220 LP	390	struct tm tm;
	391	time_t v;
	392
	393	assert(t);
	394	assert(ret);
	395
0193ad26 CR	396	loc = newlocale(LC_TIME_MASK, "C", (locale_t) 0);
	397	if (loc == (locale_t) 0)
	398	return -errno;
	399
	400	/* RFC822 */
	401	e = strptime_l(t, "%a, %d %b %Y %H:%M:%S %Z", &tm, loc);
	402	if (!e \|\| *e != 0)
	403	/* RFC 850 */
	404	e = strptime_l(t, "%A, %d-%b-%y %H:%M:%S %Z", &tm, loc);
	405	if (!e \|\| *e != 0)
	406	/* ANSI C */
	407	e = strptime_l(t, "%a %b %d %H:%M:%S %Y", &tm, loc);
0193ad26 CR	408	if (!e \|\| *e != 0)
0193ad26 CR	409	return -EINVAL;
90199220	410
0193ad26	411	v = timegm(&tm);
90199220 LP	412	if (v == (time_t) -1)
	413	return -EINVAL;
	414
5fa89b2c	415	ret = (usec_t) v USEC_PER_SEC;
90199220 LP	416	return 0;
90199220 LP	417	}