diff options
-rw-r--r-- | TODO | 9 | ||||
-rw-r--r-- | src/basic/string-util.c | 30 | ||||
-rw-r--r-- | src/basic/string-util.h | 3 | ||||
-rw-r--r-- | src/machine/machinectl.c | 2 | ||||
-rw-r--r-- | src/resolve/dns-type.c | 15 | ||||
-rw-r--r-- | src/resolve/dns-type.h | 1 | ||||
-rw-r--r-- | src/resolve/resolved-dns-answer.c | 27 | ||||
-rw-r--r-- | src/resolve/resolved-dns-answer.h | 1 | ||||
-rw-r--r-- | src/resolve/resolved-dns-dnssec.c | 200 | ||||
-rw-r--r-- | src/resolve/resolved-dns-dnssec.h | 5 | ||||
-rw-r--r-- | src/resolve/resolved-dns-transaction.c | 26 | ||||
-rw-r--r-- | src/shared/bus-util.c | 31 | ||||
-rw-r--r-- | src/shared/bus-util.h | 2 | ||||
-rw-r--r-- | src/shared/dns-domain.c | 163 | ||||
-rw-r--r-- | src/shared/dns-domain.h | 1 | ||||
-rw-r--r-- | src/systemctl/systemctl.c | 4 | ||||
-rw-r--r-- | src/test/test-dns-domain.c | 20 | ||||
-rw-r--r-- | src/test/test-string-util.c | 46 |
18 files changed, 454 insertions, 132 deletions
@@ -33,6 +33,15 @@ Janitorial Clean-ups: Features: +* add systemctl stop --job-mode=triggering that follows TRIGGERED_BY deps and adds them to the same transaction + +* coredump logic should use prlimit() to query RLIMIT_CORE of the dumpee and honour it + +* Add a MaxRuntimeSec= setting for service units (or units in general) to terminate units after they ran for a certain + amount of time + +* Maybe add a way how users can "pin" units into memory, so that they are not subject to automatic GC? + * PID1: find a way how we can reload unit file configuration for specific units only, without reloading the whole of systemd diff --git a/src/basic/string-util.c b/src/basic/string-util.c index 849e457439..1f95a9abba 100644 --- a/src/basic/string-util.c +++ b/src/basic/string-util.c @@ -348,6 +348,36 @@ char *ascii_strlower_n(char *t, size_t n) { return t; } +int ascii_strcasecmp_n(const char *a, const char *b, size_t n) { + + for (; n > 0; a++, b++, n--) { + int x, y; + + x = (int) (uint8_t) ascii_tolower(*a); + y = (int) (uint8_t) ascii_tolower(*b); + + if (x != y) + return x - y; + } + + return 0; +} + +int ascii_strcasecmp_nn(const char *a, size_t n, const char *b, size_t m) { + int r; + + r = ascii_strcasecmp_n(a, b, MIN(n, m)); + if (r != 0) + return r; + + if (n < m) + return -1; + else if (n > m) + return 1; + else + return 0; +} + bool chars_intersect(const char *a, const char *b) { const char *p; diff --git a/src/basic/string-util.h b/src/basic/string-util.h index 1ac6bcd6f8..8ea18f45aa 100644 --- a/src/basic/string-util.h +++ b/src/basic/string-util.h @@ -134,6 +134,9 @@ char ascii_tolower(char x); char *ascii_strlower(char *s); char *ascii_strlower_n(char *s, size_t n); +int ascii_strcasecmp_n(const char *a, const char *b, size_t n); +int ascii_strcasecmp_nn(const char *a, size_t n, const char *b, size_t m); + bool chars_intersect(const char *a, const char *b) _pure_; static inline bool _pure_ in_charset(const char *s, const char* charset) { diff --git a/src/machine/machinectl.c b/src/machine/machinectl.c index 685bbafdf1..38a75f85d5 100644 --- a/src/machine/machinectl.c +++ b/src/machine/machinectl.c @@ -1571,7 +1571,7 @@ static int start_machine(int argc, char *argv[], void *userdata) { return log_oom(); } - r = bus_wait_for_jobs(w, arg_quiet); + r = bus_wait_for_jobs(w, arg_quiet, NULL); if (r < 0) return r; diff --git a/src/resolve/dns-type.c b/src/resolve/dns-type.c index fb8228048d..47a37fa0a7 100644 --- a/src/resolve/dns-type.c +++ b/src/resolve/dns-type.c @@ -120,6 +120,21 @@ bool dns_type_may_redirect(uint16_t type) { DNS_TYPE_KEY); } +bool dns_type_may_wildcard(uint16_t type) { + + /* The following records may not be expanded from wildcard RRsets */ + + if (dns_type_is_pseudo(type)) + return false; + + return !IN_SET(type, + DNS_TYPE_NSEC3, + DNS_TYPE_SOA, + + /* Prohibited by https://tools.ietf.org/html/rfc4592#section-4.4 */ + DNS_TYPE_DNAME); +} + bool dns_type_is_dnssec(uint16_t type) { return IN_SET(type, DNS_TYPE_DS, diff --git a/src/resolve/dns-type.h b/src/resolve/dns-type.h index 45080fd243..747bc854e1 100644 --- a/src/resolve/dns-type.h +++ b/src/resolve/dns-type.h @@ -131,6 +131,7 @@ bool dns_type_is_valid_rr(uint16_t type); bool dns_type_may_redirect(uint16_t type); bool dns_type_is_dnssec(uint16_t type); bool dns_type_is_obsolete(uint16_t type); +bool dns_type_may_wildcard(uint16_t type); bool dns_class_is_pseudo(uint16_t class); bool dns_class_is_valid_rr(uint16_t class); diff --git a/src/resolve/resolved-dns-answer.c b/src/resolve/resolved-dns-answer.c index b50558e280..c359432a7a 100644 --- a/src/resolve/resolved-dns-answer.c +++ b/src/resolve/resolved-dns-answer.c @@ -320,6 +320,33 @@ int dns_answer_contains_nsec_or_nsec3(DnsAnswer *a) { return false; } +int dns_answer_contains_zone_nsec3(DnsAnswer *answer, const char *zone) { + DnsResourceRecord *rr; + int r; + + /* Checks whether the specified answer contains at least one NSEC3 RR in the specified zone */ + + DNS_ANSWER_FOREACH(rr, answer) { + const char *p; + + if (rr->key->type != DNS_TYPE_NSEC3) + continue; + + p = DNS_RESOURCE_KEY_NAME(rr->key); + r = dns_name_parent(&p); + if (r < 0) + return r; + if (r == 0) + continue; + + r = dns_name_equal(p, zone); + if (r != 0) + return r; + } + + return false; +} + int dns_answer_find_soa(DnsAnswer *a, const DnsResourceKey *key, DnsResourceRecord **ret, DnsAnswerFlags *flags) { DnsResourceRecord *rr, *soa = NULL; DnsAnswerFlags rr_flags, soa_flags = 0; diff --git a/src/resolve/resolved-dns-answer.h b/src/resolve/resolved-dns-answer.h index 715e487d94..3eff21f8d0 100644 --- a/src/resolve/resolved-dns-answer.h +++ b/src/resolve/resolved-dns-answer.h @@ -64,6 +64,7 @@ int dns_answer_match_key(DnsAnswer *a, const DnsResourceKey *key, DnsAnswerFlags int dns_answer_contains_rr(DnsAnswer *a, DnsResourceRecord *rr, DnsAnswerFlags *combined_flags); int dns_answer_contains_key(DnsAnswer *a, const DnsResourceKey *key, DnsAnswerFlags *combined_flags); int dns_answer_contains_nsec_or_nsec3(DnsAnswer *a); +int dns_answer_contains_zone_nsec3(DnsAnswer *answer, const char *zone); int dns_answer_find_soa(DnsAnswer *a, const DnsResourceKey *key, DnsResourceRecord **ret, DnsAnswerFlags *flags); int dns_answer_find_cname_or_dname(DnsAnswer *a, const DnsResourceKey *key, DnsResourceRecord **ret, DnsAnswerFlags *flags); diff --git a/src/resolve/resolved-dns-dnssec.c b/src/resolve/resolved-dns-dnssec.c index 43fcbe1460..afff979b5a 100644 --- a/src/resolve/resolved-dns-dnssec.c +++ b/src/resolve/resolved-dns-dnssec.c @@ -442,8 +442,9 @@ static int dnssec_rrsig_expired(DnsResourceRecord *rrsig, usec_t realtime) { expiration = rrsig->rrsig.expiration * USEC_PER_SEC; inception = rrsig->rrsig.inception * USEC_PER_SEC; + /* Consider inverted validity intervals as expired */ if (inception > expiration) - return -EKEYREJECTED; + return true; /* Permit a certain amount of clock skew of 10% of the valid * time range. This takes inspiration from unbound's @@ -512,8 +513,9 @@ int dnssec_verify_rrset( DnsResourceRecord **list, *rr; gcry_md_hd_t md = NULL; int r, md_algorithm; - bool wildcard = false; size_t k, n = 0; + bool wildcard; + const char *source; assert(key); assert(rrsig); @@ -542,6 +544,28 @@ int dnssec_verify_rrset( return 0; } + /* Determine the "Source of Synthesis" and whether this is a wildcard RRSIG */ + r = dns_name_suffix(DNS_RESOURCE_KEY_NAME(key), rrsig->rrsig.labels, &source); + if (r < 0) + return r; + if (r > 0 && !dns_type_may_wildcard(rrsig->rrsig.type_covered)) { + /* We refuse to validate NSEC3 or SOA RRs that are synthesized from wildcards */ + *result = DNSSEC_INVALID; + return 0; + } + if (r == 1) { + /* If we stripped a single label, then let's see if that maybe was "*". If so, we are not really + * synthesized from a wildcard, we are the wildcard itself. Treat that like a normal name. */ + r = dns_name_startswith(DNS_RESOURCE_KEY_NAME(key), "*"); + if (r < 0) + return r; + if (r > 0) + source = DNS_RESOURCE_KEY_NAME(key); + + wildcard = r == 0; + } else + wildcard = r > 0; + /* Collect all relevant RRs in a single array, so that we can look at the RRset */ list = newa(DnsResourceRecord *, dns_answer_size(a)); @@ -592,22 +616,19 @@ int dnssec_verify_rrset( goto finish; gcry_md_write(md, wire_format_name, r); + /* Convert the source of synthesis into wire format */ + r = dns_name_to_wire_format(source, wire_format_name, sizeof(wire_format_name), true); + if (r < 0) + goto finish; + for (k = 0; k < n; k++) { - const char *suffix; size_t l; + rr = list[k]; - r = dns_name_suffix(DNS_RESOURCE_KEY_NAME(rr->key), rrsig->rrsig.labels, &suffix); - if (r < 0) - goto finish; - if (r > 0) /* This is a wildcard! */ { + /* Hash the source of synthesis. If this is a wildcard, then prefix it with the *. label */ + if (wildcard) gcry_md_write(md, (uint8_t[]) { 1, '*'}, 2); - wildcard = true; - } - - r = dns_name_to_wire_format(suffix, wire_format_name, sizeof(wire_format_name), true); - if (r < 0) - goto finish; gcry_md_write(md, wire_format_name, r); md_add_uint16(md, rr->key->type); @@ -1274,8 +1295,8 @@ static int nsec3_hashed_domain_make(DnsResourceRecord *nsec3, const char *domain * name uses an NSEC3 record with the opt-out bit set. Lastly, if we are given insufficient NSEC3 records * to conclude anything we indicate this by returning NO_RR. */ static int dnssec_test_nsec3(DnsAnswer *answer, DnsResourceKey *key, DnssecNsecResult *result, bool *authenticated, uint32_t *ttl) { - _cleanup_free_ char *next_closer_domain = NULL, *wildcard = NULL, *wildcard_domain = NULL; - const char *zone, *p, *pp = NULL; + _cleanup_free_ char *next_closer_domain = NULL, *wildcard_domain = NULL; + const char *zone, *p, *pp = NULL, *wildcard; DnsResourceRecord *rr, *enclosure_rr, *zone_rr, *wildcard_rr = NULL; DnsAnswerFlags flags; int hashed_size, r; @@ -1401,10 +1422,7 @@ found_closest_encloser: /* Prove that there is no next closer and whether or not there is a wildcard domain. */ - wildcard = strappend("*.", p); - if (!wildcard) - return -ENOMEM; - + wildcard = strjoina("*.", p); r = nsec3_hashed_domain_make(enclosure_rr, wildcard, zone, &wildcard_domain); if (r < 0) return r; @@ -1586,7 +1604,7 @@ int dnssec_nsec_test(DnsAnswer *answer, DnsResourceKey *key, DnssecNsecResult *r return 0; } -int dnssec_nsec_test_between(DnsAnswer *answer, const char *name, const char *zone, bool *authenticated) { +int dnssec_nsec_test_enclosed(DnsAnswer *answer, uint16_t type, const char *name, const char *zone, bool *authenticated) { DnsResourceRecord *rr; DnsAnswerFlags flags; int r; @@ -1600,6 +1618,9 @@ int dnssec_nsec_test_between(DnsAnswer *answer, const char *name, const char *zo DNS_ANSWER_FOREACH_FLAGS(rr, flags, answer) { bool found = false; + if (rr->key->type != type && type != DNS_TYPE_ANY) + continue; + r = dns_name_endswith(DNS_RESOURCE_KEY_NAME(rr->key), zone); if (r < 0) return r; @@ -1667,6 +1688,145 @@ int dnssec_nsec_test_between(DnsAnswer *answer, const char *name, const char *zo return 0; } +static int dnssec_test_positive_wildcard_nsec3( + DnsAnswer *answer, + const char *name, + const char *source, + const char *zone, + bool *authenticated) { + + const char *next_closer = NULL; + int r; + + /* Run a positive NSEC3 wildcard proof. Specifically: + * + * A proof that the the "next closer" of the generating wildcard does not exist. + * + * Note a key difference between the NSEC3 and NSEC versions of the proof. NSEC RRs don't have to exist for + * empty non-transients. NSEC3 RRs however have to. This means it's sufficient to check if the next closer name + * exists for the NSEC3 RR and we are done. + * + * To prove that a.b.c.d.e.f is rightfully synthesized from a wildcard *.d.e.f all we have to check is that + * c.d.e.f does not exist. */ + + for (;;) { + next_closer = name; + r = dns_name_parent(&name); + if (r < 0) + return r; + if (r == 0) + return 0; + + r = dns_name_equal(name, source); + if (r < 0) + return r; + if (r > 0) + break; + } + + return dnssec_nsec_test_enclosed(answer, DNS_TYPE_NSEC3, next_closer, zone, authenticated); +} + +static int dnssec_test_positive_wildcard_nsec( + DnsAnswer *answer, + const char *name, + const char *source, + const char *zone, + bool *_authenticated) { + + bool authenticated = true; + int r; + + /* Run a positive NSEC wildcard proof. Specifically: + * + * A proof that there's neither a wildcard name nor a non-wildcard name that is a suffix of the name "name" and + * a prefix of the synthesizing source "source" in the zone "zone". + * + * See RFC 5155, Section 8.8 and RFC 4035, Section 5.3.4 + * + * Note that if we want to prove that a.b.c.d.e.f is rightfully synthesized from a wildcard *.d.e.f, then we + * have to prove that none of the following exist: + * + * 1) a.b.c.d.e.f + * 2) *.b.c.d.e.f + * 3) b.c.d.e.f + * 4) *.c.d.e.f + * 5) c.d.e.f + * + */ + + for (;;) { + _cleanup_free_ char *wc = NULL; + bool a = false; + + /* Check if there's an NSEC or NSEC3 RR that proves that the mame we determined is really non-existing, + * i.e between the owner name and the next name of an NSEC RR. */ + r = dnssec_nsec_test_enclosed(answer, DNS_TYPE_NSEC, name, zone, &a); + if (r <= 0) + return r; + + authenticated = authenticated && a; + + /* Strip one label off */ + r = dns_name_parent(&name); + if (r <= 0) + return r; + + /* Did we reach the source of synthesis? */ + r = dns_name_equal(name, source); + if (r < 0) + return r; + if (r > 0) { + /* Successful exit */ + *_authenticated = authenticated; + return 1; + } + + /* Safety check, that the source of synthesis is still our suffix */ + r = dns_name_endswith(name, source); + if (r < 0) + return r; + if (r == 0) + return -EBADMSG; + + /* Replace the label we stripped off with an asterisk */ + wc = strappend("*.", name); + if (!wc) + return -ENOMEM; + + /* And check if the proof holds for the asterisk name, too */ + r = dnssec_nsec_test_enclosed(answer, DNS_TYPE_NSEC, wc, zone, &a); + if (r <= 0) + return r; + + authenticated = authenticated && a; + /* In the next iteration we'll check the non-asterisk-prefixed version */ + } +} + +int dnssec_test_positive_wildcard( + DnsAnswer *answer, + const char *name, + const char *source, + const char *zone, + bool *authenticated) { + + int r; + + assert(name); + assert(source); + assert(zone); + assert(authenticated); + + r = dns_answer_contains_zone_nsec3(answer, zone); + if (r < 0) + return r; + if (r > 0) + return dnssec_test_positive_wildcard_nsec3(answer, name, source, zone, authenticated); + else + return dnssec_test_positive_wildcard_nsec(answer, name, source, zone, authenticated); +} + static const char* const dnssec_result_table[_DNSSEC_RESULT_MAX] = { [DNSSEC_VALIDATED] = "validated", [DNSSEC_VALIDATED_WILDCARD] = "validated-wildcard", diff --git a/src/resolve/resolved-dns-dnssec.h b/src/resolve/resolved-dns-dnssec.h index 8a9bcf5b91..b9d32db120 100644 --- a/src/resolve/resolved-dns-dnssec.h +++ b/src/resolve/resolved-dns-dnssec.h @@ -83,7 +83,10 @@ typedef enum DnssecNsecResult { } DnssecNsecResult; int dnssec_nsec_test(DnsAnswer *answer, DnsResourceKey *key, DnssecNsecResult *result, bool *authenticated, uint32_t *ttl); -int dnssec_nsec_test_between(DnsAnswer *answer, const char *name, const char *zone, bool *authenticated); + +int dnssec_nsec_test_enclosed(DnsAnswer *answer, uint16_t type, const char *name, const char *zone, bool *authenticated); + +int dnssec_test_positive_wildcard(DnsAnswer *a, const char *name, const char *source, const char *zone, bool *authenticated); const char* dnssec_result_to_string(DnssecResult m) _const_; DnssecResult dnssec_result_from_string(const char *s) _pure_; diff --git a/src/resolve/resolved-dns-transaction.c b/src/resolve/resolved-dns-transaction.c index 9ee10f21c8..c7d2d82ecf 100644 --- a/src/resolve/resolved-dns-transaction.c +++ b/src/resolve/resolved-dns-transaction.c @@ -2531,28 +2531,24 @@ int dns_transaction_validate_dnssec(DnsTransaction *t) { if (result == DNSSEC_VALIDATED_WILDCARD) { bool authenticated = false; - const char *suffix; + const char *source; - /* This RRset validated, but as a wildcard. This means we need to proof via NSEC/NSEC3 - * that no matching non-wildcard RR exists. - * - * See RFC 5155, Section 8.8 and RFC 4035, Section 5.3.4*/ + /* This RRset validated, but as a wildcard. This means we need to prove via NSEC/NSEC3 + * that no matching non-wildcard RR exists.*/ - r = dns_name_suffix(DNS_RESOURCE_KEY_NAME(rr->key), rrsig->rrsig.labels, &suffix); + /* First step, determine the source of synthesis */ + r = dns_name_suffix(DNS_RESOURCE_KEY_NAME(rr->key), rrsig->rrsig.labels, &source); if (r < 0) return r; if (r == 0) return -EBADMSG; - r = dns_name_parent(&suffix); - if (r < 0) - return r; - if (r == 0) - return -EBADMSG; - - r = dnssec_nsec_test_between(validated, DNS_RESOURCE_KEY_NAME(rr->key), suffix, &authenticated); - if (r < 0) - return r; + r = dnssec_test_positive_wildcard( + validated, + DNS_RESOURCE_KEY_NAME(rr->key), + source, + rrsig->rrsig.signer, + &authenticated); /* Unless the NSEC proof showed that the key really doesn't exist something is off. */ if (r == 0) diff --git a/src/shared/bus-util.c b/src/shared/bus-util.c index 5c6dc34700..b9a8ee4074 100644 --- a/src/shared/bus-util.c +++ b/src/shared/bus-util.c @@ -2041,13 +2041,21 @@ static const struct { { "start-limit", "start of the service was attempted too often" } }; -static void log_job_error_with_service_result(const char* service, const char *result) { - _cleanup_free_ char *service_shell_quoted = NULL; +static void log_job_error_with_service_result(const char* service, const char *result, const char *extra_args) { + _cleanup_free_ char *service_shell_quoted = NULL, *systemctl_extra_args = NULL; assert(service); service_shell_quoted = shell_maybe_quote(service); + systemctl_extra_args = strjoin("systemctl ", extra_args, " ", NULL); + if (!systemctl_extra_args) { + log_oom(); + return; + } + + systemctl_extra_args = strstrip(systemctl_extra_args); + if (!isempty(result)) { unsigned i; @@ -2056,27 +2064,30 @@ static void log_job_error_with_service_result(const char* service, const char *r break; if (i < ELEMENTSOF(explanations)) { - log_error("Job for %s failed because %s. See \"systemctl status %s\" and \"journalctl -xe\" for details.\n", + log_error("Job for %s failed because %s. See \"%s status %s\" and \"journalctl -xe\" for details.\n", service, explanations[i].explanation, + systemctl_extra_args, strna(service_shell_quoted)); goto finish; } } - log_error("Job for %s failed. See \"systemctl status %s\" and \"journalctl -xe\" for details.\n", + log_error("Job for %s failed. See \"%s status %s\" and \"journalctl -xe\" for details.\n", service, + systemctl_extra_args, strna(service_shell_quoted)); finish: /* For some results maybe additional explanation is required */ if (streq_ptr(result, "start-limit")) - log_info("To force a start use \"systemctl reset-failed %1$s\" followed by \"systemctl start %1$s\" again.", + log_info("To force a start use \"%1$s reset-failed %2$s\" followed by \"%1$s start %2$s\" again.", + systemctl_extra_args, strna(service_shell_quoted)); } -static int check_wait_response(BusWaitForJobs *d, bool quiet) { +static int check_wait_response(BusWaitForJobs *d, bool quiet, const char *extra_args) { int r = 0; assert(d->result); @@ -2103,7 +2114,7 @@ static int check_wait_response(BusWaitForJobs *d, bool quiet) { if (q < 0) log_debug_errno(q, "Failed to get Result property of service %s: %m", d->name); - log_job_error_with_service_result(d->name, result); + log_job_error_with_service_result(d->name, result, extra_args); } else log_error("Job failed. See \"journalctl -xe\" for details."); } @@ -2127,7 +2138,7 @@ static int check_wait_response(BusWaitForJobs *d, bool quiet) { return r; } -int bus_wait_for_jobs(BusWaitForJobs *d, bool quiet) { +int bus_wait_for_jobs(BusWaitForJobs *d, bool quiet, const char *extra_args) { int r = 0; assert(d); @@ -2140,7 +2151,7 @@ int bus_wait_for_jobs(BusWaitForJobs *d, bool quiet) { return log_error_errno(q, "Failed to wait for response: %m"); if (d->result) { - q = check_wait_response(d, quiet); + q = check_wait_response(d, quiet, extra_args); /* Return the first error as it is most likely to be * meaningful. */ if (q < 0 && r == 0) @@ -2175,7 +2186,7 @@ int bus_wait_for_jobs_one(BusWaitForJobs *d, const char *path, bool quiet) { if (r < 0) return log_oom(); - return bus_wait_for_jobs(d, quiet); + return bus_wait_for_jobs(d, quiet, NULL); } int bus_deserialize_and_dump_unit_file_changes(sd_bus_message *m, bool quiet, UnitFileChange **changes, unsigned *n_changes) { diff --git a/src/shared/bus-util.h b/src/shared/bus-util.h index a5e3b6a0b5..18fc827754 100644 --- a/src/shared/bus-util.h +++ b/src/shared/bus-util.h @@ -182,7 +182,7 @@ typedef struct BusWaitForJobs BusWaitForJobs; int bus_wait_for_jobs_new(sd_bus *bus, BusWaitForJobs **ret); void bus_wait_for_jobs_free(BusWaitForJobs *d); int bus_wait_for_jobs_add(BusWaitForJobs *d, const char *path); -int bus_wait_for_jobs(BusWaitForJobs *d, bool quiet); +int bus_wait_for_jobs(BusWaitForJobs *d, bool quiet, const char *extra_args); int bus_wait_for_jobs_one(BusWaitForJobs *d, const char *path, bool quiet); DEFINE_TRIVIAL_CLEANUP_FUNC(BusWaitForJobs*, bus_wait_for_jobs_free); diff --git a/src/shared/dns-domain.c b/src/shared/dns-domain.c index 59475115ba..d1fb97fe92 100644 --- a/src/shared/dns-domain.c +++ b/src/shared/dns-domain.c @@ -263,7 +263,6 @@ int dns_label_escape(const char *p, size_t l, char *dest, size_t sz) { *(q++) = '0' + (char) ((uint8_t) *p % 10); sz -= 4; - } p++; @@ -522,7 +521,7 @@ int dns_name_compare_func(const void *a, const void *b) { y = (const char *) b + strlen(b); for (;;) { - char la[DNS_LABEL_MAX+1], lb[DNS_LABEL_MAX+1]; + char la[DNS_LABEL_MAX], lb[DNS_LABEL_MAX]; if (x == NULL && y == NULL) return 0; @@ -532,8 +531,15 @@ int dns_name_compare_func(const void *a, const void *b) { if (r < 0 || q < 0) return r - q; - k = dns_label_undo_idna(la, r, la, sizeof(la)); - w = dns_label_undo_idna(lb, q, lb, sizeof(lb)); + if (r > 0) + k = dns_label_undo_idna(la, r, la, sizeof(la)); + else + k = 0; + if (q > 0) + w = dns_label_undo_idna(lb, q, lb, sizeof(lb)); + else + w = 0; + if (k < 0 || w < 0) return k - w; if (k > 0) @@ -541,8 +547,7 @@ int dns_name_compare_func(const void *a, const void *b) { if (w > 0) q = w; - la[r] = lb[q] = 0; - r = strcasecmp(la, lb); + r = ascii_strcasecmp_nn(la, r, lb, q); if (r != 0) return r; } @@ -553,54 +558,54 @@ const struct hash_ops dns_name_hash_ops = { .compare = dns_name_compare_func }; +static int dns_label_unescape_undo_idna(const char **name, char *dest, size_t sz) { + int r, k; + + /* Clobbers all arguments on failure... */ + + r = dns_label_unescape(name, dest, sz); + if (r <= 0) + return r; + + k = dns_label_undo_idna(dest, r, dest, sz); + if (k < 0) + return k; + if (k == 0) /* not an IDNA name */ + return r; + + return k; +} + int dns_name_equal(const char *x, const char *y) { - int r, q, k, w; + int r, q; assert(x); assert(y); for (;;) { - char la[DNS_LABEL_MAX+1], lb[DNS_LABEL_MAX+1]; - - if (*x == 0 && *y == 0) - return true; + char la[DNS_LABEL_MAX], lb[DNS_LABEL_MAX]; - r = dns_label_unescape(&x, la, sizeof(la)); + r = dns_label_unescape_undo_idna(&x, la, sizeof(la)); if (r < 0) return r; - if (r > 0) { - k = dns_label_undo_idna(la, r, la, sizeof(la)); - if (k < 0) - return k; - if (k > 0) - r = k; - } - q = dns_label_unescape(&y, lb, sizeof(lb)); + q = dns_label_unescape_undo_idna(&y, lb, sizeof(lb)); if (q < 0) return q; - if (q > 0) { - w = dns_label_undo_idna(lb, q, lb, sizeof(lb)); - if (w < 0) - return w; - if (w > 0) - q = w; - } - /* If one name had fewer labels than the other, this - * will show up as empty label here, which the - * strcasecmp() below will properly consider different - * from a non-empty label. */ + if (r != q) + return false; + if (r == 0) + return true; - la[r] = lb[q] = 0; - if (strcasecmp(la, lb) != 0) + if (ascii_strcasecmp_n(la, lb, r) != 0) return false; } } int dns_name_endswith(const char *name, const char *suffix) { const char *n, *s, *saved_n = NULL; - int r, q, k, w; + int r, q; assert(name); assert(suffix); @@ -609,41 +614,25 @@ int dns_name_endswith(const char *name, const char *suffix) { s = suffix; for (;;) { - char ln[DNS_LABEL_MAX+1], ls[DNS_LABEL_MAX+1]; + char ln[DNS_LABEL_MAX], ls[DNS_LABEL_MAX]; - r = dns_label_unescape(&n, ln, sizeof(ln)); + r = dns_label_unescape_undo_idna(&n, ln, sizeof(ln)); if (r < 0) return r; - if (r > 0) { - k = dns_label_undo_idna(ln, r, ln, sizeof(ln)); - if (k < 0) - return k; - if (k > 0) - r = k; - } if (!saved_n) saved_n = n; - q = dns_label_unescape(&s, ls, sizeof(ls)); + q = dns_label_unescape_undo_idna(&s, ls, sizeof(ls)); if (q < 0) return q; - if (q > 0) { - w = dns_label_undo_idna(ls, q, ls, sizeof(ls)); - if (w < 0) - return w; - if (w > 0) - q = w; - } if (r == 0 && q == 0) return true; if (r == 0 && saved_n == n) return false; - ln[r] = ls[q] = 0; - - if (r != q || strcasecmp(ln, ls)) { + if (r != q || ascii_strcasecmp_n(ln, ls, r) != 0) { /* Not the same, let's jump back, and try with the next label again */ s = suffix; @@ -653,9 +642,39 @@ int dns_name_endswith(const char *name, const char *suffix) { } } +int dns_name_startswith(const char *name, const char *prefix) { + const char *n, *p; + int r, q; + + assert(name); + assert(prefix); + + n = name; + p = prefix; + + for (;;) { + char ln[DNS_LABEL_MAX], lp[DNS_LABEL_MAX]; + + r = dns_label_unescape_undo_idna(&p, lp, sizeof(lp)); + if (r < 0) + return r; + if (r == 0) + return true; + + q = dns_label_unescape_undo_idna(&n, ln, sizeof(ln)); + if (q < 0) + return q; + + if (r != q) + return false; + if (ascii_strcasecmp_n(ln, lp, r) != 0) + return false; + } +} + int dns_name_change_suffix(const char *name, const char *old_suffix, const char *new_suffix, char **ret) { const char *n, *s, *saved_before = NULL, *saved_after = NULL, *prefix; - int r, q, k, w; + int r, q; assert(name); assert(old_suffix); @@ -666,35 +685,21 @@ int dns_name_change_suffix(const char *name, const char *old_suffix, const char s = old_suffix; for (;;) { - char ln[DNS_LABEL_MAX+1], ls[DNS_LABEL_MAX+1]; + char ln[DNS_LABEL_MAX], ls[DNS_LABEL_MAX]; if (!saved_before) saved_before = n; - r = dns_label_unescape(&n, ln, sizeof(ln)); + r = dns_label_unescape_undo_idna(&n, ln, sizeof(ln)); if (r < 0) return r; - if (r > 0) { - k = dns_label_undo_idna(ln, r, ln, sizeof(ln)); - if (k < 0) - return k; - if (k > 0) - r = k; - } if (!saved_after) saved_after = n; - q = dns_label_unescape(&s, ls, sizeof(ls)); + q = dns_label_unescape_undo_idna(&s, ls, sizeof(ls)); if (q < 0) return q; - if (q > 0) { - w = dns_label_undo_idna(ls, q, ls, sizeof(ls)); - if (w < 0) - return w; - if (w > 0) - q = w; - } if (r == 0 && q == 0) break; @@ -703,9 +708,7 @@ int dns_name_change_suffix(const char *name, const char *old_suffix, const char return 0; } - ln[r] = ls[q] = 0; - - if (r != q || strcasecmp(ln, ls)) { + if (r != q || ascii_strcasecmp_n(ln, ls, r) != 0) { /* Not the same, let's jump back, and try with the next label again */ s = old_suffix; @@ -873,12 +876,11 @@ bool dns_name_is_root(const char *name) { } bool dns_name_is_single_label(const char *name) { - char label[DNS_LABEL_MAX+1]; int r; assert(name); - r = dns_label_unescape(&name, label, sizeof(label)); + r = dns_name_parent(&name); if (r <= 0) return false; @@ -1099,17 +1101,15 @@ int dns_service_split(const char *joined, char **_name, char **_type, char **_do if (x >= 3 && srv_type_label_is_valid(c, cn)) { if (dns_service_name_label_is_valid(a, an)) { - /* OK, got <name> . <type> . <type2> . <domain> */ name = strndup(a, an); if (!name) return -ENOMEM; - type = new(char, bn+1+cn+1); + type = strjoin(b, ".", c, NULL); if (!type) return -ENOMEM; - strcpy(stpcpy(stpcpy(type, b), "."), c); d = p; goto finish; @@ -1121,10 +1121,9 @@ int dns_service_split(const char *joined, char **_name, char **_type, char **_do name = NULL; - type = new(char, an+1+bn+1); + type = strjoin(a, ".", b, NULL); if (!type) return -ENOMEM; - strcpy(stpcpy(stpcpy(type, a), "."), b); d = q; goto finish; diff --git a/src/shared/dns-domain.h b/src/shared/dns-domain.h index dd8ae3ac98..4fbe0a618f 100644 --- a/src/shared/dns-domain.h +++ b/src/shared/dns-domain.h @@ -83,6 +83,7 @@ extern const struct hash_ops dns_name_hash_ops; int dns_name_between(const char *a, const char *b, const char *c); int dns_name_equal(const char *x, const char *y); int dns_name_endswith(const char *name, const char *suffix); +int dns_name_startswith(const char *name, const char *prefix); int dns_name_change_suffix(const char *name, const char *old_suffix, const char *new_suffix, char **ret); diff --git a/src/systemctl/systemctl.c b/src/systemctl/systemctl.c index 1448d974bd..3f2c308b8f 100644 --- a/src/systemctl/systemctl.c +++ b/src/systemctl/systemctl.c @@ -1979,7 +1979,7 @@ static void dump_unit_file_changes(const UnitFileChange *changes, unsigned n_cha for (i = 0; i < n_changes; i++) { if (changes[i].type == UNIT_FILE_SYMLINK) - log_info("Created symlink from %s to %s.", changes[i].path, changes[i].source); + log_info("Created symlink %s, pointing to %s.", changes[i].path, changes[i].source); else log_info("Removed symlink %s.", changes[i].path); } @@ -2794,7 +2794,7 @@ static int start_unit(int argc, char *argv[], void *userdata) { if (!arg_no_block) { int q; - q = bus_wait_for_jobs(w, arg_quiet); + q = bus_wait_for_jobs(w, arg_quiet, arg_scope != UNIT_FILE_SYSTEM ? "--user" : NULL); if (q < 0) return q; diff --git a/src/test/test-dns-domain.c b/src/test/test-dns-domain.c index 6c3c49908f..fe3ae45349 100644 --- a/src/test/test-dns-domain.c +++ b/src/test/test-dns-domain.c @@ -276,6 +276,25 @@ static void test_dns_name_endswith(void) { test_dns_name_endswith_one("x.y\001.z", "waldo", -EINVAL); } +static void test_dns_name_startswith_one(const char *a, const char *b, int ret) { + assert_se(dns_name_startswith(a, b) == ret); +} + +static void test_dns_name_startswith(void) { + test_dns_name_startswith_one("", "", true); + test_dns_name_startswith_one("", "xxx", false); + test_dns_name_startswith_one("xxx", "", true); + test_dns_name_startswith_one("x", "x", true); + test_dns_name_startswith_one("x", "y", false); + test_dns_name_startswith_one("x.y", "x.y", true); + test_dns_name_startswith_one("x.y", "y.x", false); + test_dns_name_startswith_one("x.y", "x", true); + test_dns_name_startswith_one("x.y", "X", true); + test_dns_name_startswith_one("x.y", "y", false); + test_dns_name_startswith_one("x.y", "", true); + test_dns_name_startswith_one("x.y", "X", true); +} + static void test_dns_name_is_root(void) { assert_se(dns_name_is_root("")); assert_se(dns_name_is_root(".")); @@ -567,6 +586,7 @@ int main(int argc, char *argv[]) { test_dns_name_normalize(); test_dns_name_equal(); test_dns_name_endswith(); + test_dns_name_startswith(); test_dns_name_between(); test_dns_name_is_root(); test_dns_name_is_single_label(); diff --git a/src/test/test-string-util.c b/src/test/test-string-util.c index 25444c794a..12889ce873 100644 --- a/src/test/test-string-util.c +++ b/src/test/test-string-util.c @@ -55,7 +55,53 @@ static void test_string_erase(void) { assert_se(streq(string_erase(x), "xxxxxxxxx")); } +static void test_ascii_strcasecmp_n(void) { + + assert_se(ascii_strcasecmp_n("", "", 0) == 0); + assert_se(ascii_strcasecmp_n("", "", 1) == 0); + assert_se(ascii_strcasecmp_n("", "a", 1) < 0); + assert_se(ascii_strcasecmp_n("", "a", 2) < 0); + assert_se(ascii_strcasecmp_n("a", "", 1) > 0); + assert_se(ascii_strcasecmp_n("a", "", 2) > 0); + assert_se(ascii_strcasecmp_n("a", "a", 1) == 0); + assert_se(ascii_strcasecmp_n("a", "a", 2) == 0); + assert_se(ascii_strcasecmp_n("a", "b", 1) < 0); + assert_se(ascii_strcasecmp_n("a", "b", 2) < 0); + assert_se(ascii_strcasecmp_n("b", "a", 1) > 0); + assert_se(ascii_strcasecmp_n("b", "a", 2) > 0); + assert_se(ascii_strcasecmp_n("xxxxyxxxx", "xxxxYxxxx", 9) == 0); + assert_se(ascii_strcasecmp_n("xxxxxxxxx", "xxxxyxxxx", 9) < 0); + assert_se(ascii_strcasecmp_n("xxxxXxxxx", "xxxxyxxxx", 9) < 0); + assert_se(ascii_strcasecmp_n("xxxxxxxxx", "xxxxYxxxx", 9) < 0); + assert_se(ascii_strcasecmp_n("xxxxXxxxx", "xxxxYxxxx", 9) < 0); + + assert_se(ascii_strcasecmp_n("xxxxYxxxx", "xxxxYxxxx", 9) == 0); + assert_se(ascii_strcasecmp_n("xxxxyxxxx", "xxxxxxxxx", 9) > 0); + assert_se(ascii_strcasecmp_n("xxxxyxxxx", "xxxxXxxxx", 9) > 0); + assert_se(ascii_strcasecmp_n("xxxxYxxxx", "xxxxxxxxx", 9) > 0); + assert_se(ascii_strcasecmp_n("xxxxYxxxx", "xxxxXxxxx", 9) > 0); +} + +static void test_ascii_strcasecmp_nn(void) { + assert_se(ascii_strcasecmp_nn("", 0, "", 0) == 0); + assert_se(ascii_strcasecmp_nn("", 0, "", 1) < 0); + assert_se(ascii_strcasecmp_nn("", 1, "", 0) > 0); + assert_se(ascii_strcasecmp_nn("", 1, "", 1) == 0); + + assert_se(ascii_strcasecmp_nn("aaaa", 4, "aaAa", 4) == 0); + assert_se(ascii_strcasecmp_nn("aaa", 3, "aaAa", 4) < 0); + assert_se(ascii_strcasecmp_nn("aaa", 4, "aaAa", 4) < 0); + assert_se(ascii_strcasecmp_nn("aaaa", 4, "aaA", 3) > 0); + assert_se(ascii_strcasecmp_nn("aaaa", 4, "AAA", 4) > 0); + + assert_se(ascii_strcasecmp_nn("aaaa", 4, "bbbb", 4) < 0); + assert_se(ascii_strcasecmp_nn("aaAA", 4, "BBbb", 4) < 0); + assert_se(ascii_strcasecmp_nn("BBbb", 4, "aaaa", 4) > 0); +} + int main(int argc, char *argv[]) { test_string_erase(); + test_ascii_strcasecmp_n(); + test_ascii_strcasecmp_nn(); return 0; } |