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/* ISC license. */
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <skalibs/uint64.h>
#include <skalibs/posixplz.h>
#include <skalibs/prog.h>
#include <skalibs/strerr.h>
#include <skalibs/gol.h>
#include <skalibs/stralloc.h>
#include <skalibs/genalloc.h>
#include <skalibs/djbunix.h>
#include <s6-rc/config.h>
#include <s6-rc/s6rc.h>
#define USAGE "s6-rc-set-change [ -v verbosity ] [ -r repo ] [ -E ] [ -f | -I fail|pull|warn ] [ -n ] set newsub services..."
#define dieusage() strerr_dieusage(100, USAGE)
enum golb_e
{
GOLB_FORCE_ESSENTIAL = 0x01,
GOLB_IGNORE_DEPENDENCIES = 0x02,
GOLB_DRYRUN = 0x04
} ;
enum gola_e
{
GOLA_VERBOSITY,
GOLA_REPODIR,
GOLA_FORCELEVEL,
GOLA_N
} ;
struct subname_s
{
char const *name ;
uint8_t sub ;
} ;
static gol_bool const rgolb[] =
{
{ .so = 'E', .lo = "force-essential", .clear = 0, .set = GOLB_FORCE_ESSENTIAL },
{ .so = 'f', .lo = "ignore-dependencies", .clear = 0, .set = GOLB_IGNORE_DEPENDENCIES },
{ .so = 'n', .lo = "dry-run", .clear = 0, .set = GOLB_DRYRUN }
} ;
static gol_arg const rgola[] =
{
{ .so = 'v', .lo = "verbosity", .i = GOLA_VERBOSITY },
{ .so = 'r', .lo = "repodir", .i = GOLA_REPODIR },
{ .so = 'I', .lo = "if-dependencies-found", .i = GOLA_FORCELEVEL }
} ;
static struct subname_s const accepted_forcelevels[] =
{
{ .name = "fail", .sub = 0 },
{ .name = "pull", .sub = 2 },
{ .name = "warn", .sub = 1 }
} ;
static uint64_t wgolb = 0 ;
static struct subname_s const accepted_subs[] =
{
{ .name = "activate", .sub = 2 },
{ .name = "active", .sub = 2 },
{ .name = "always", .sub = 3 },
{ .name = "deactivate", .sub = 1 },
{ .name = "disable", .sub = 1 },
{ .name = "disabled", .sub = 1 },
{ .name = "enable", .sub = 2 },
{ .name = "enabled", .sub = 2 },
{ .name = "essential", .sub = 3 },
{ .name = "inactive", .sub = 1 },
{ .name = "latent", .sub = 1 },
{ .name = "make-essential", .sub = 3 },
{ .name = "mask", .sub = 0 },
{ .name = "masked", .sub = 0 },
{ .name = "onboot", .sub = 2 },
{ .name = "suppress", .sub = 0 },
{ .name = "unmask", .sub = 1 },
{ .name = "unmasked", .sub = 1 },
{ .name = "usable", .sub = 1 }
} ;
static int subname_cmp (void const *a, void const *b)
{
return strcmp((char const *)a, ((struct subname_s const *)b)->name) ;
}
int main (int argc, char const *const *argv)
{
stralloc storage = STRALLOC_ZERO ;
genalloc svlist = GENALLOC_ZERO ; /* s6rc_repo_sv */
genalloc indices = GENALLOC_ZERO ; /* size_t then uint32_t */
int fdlock ;
unsigned int verbosity = 1 ;
unsigned int forcelevel = 1 ;
char const *wgola[GOLA_N] = { 0 } ;
unsigned int golc ;
struct subname_s *newsub ;
size_t max = 0, sabase ;
s6rc_repo_sv *list ;
uint32_t listn, n ;
PROG = "s6-rc-set-change" ;
wgola[GOLA_REPODIR] = S6RC_REPODIR ;
golc = GOL_main(argc, argv, rgolb, rgola, &wgolb, wgola) ;
argc -= golc ; argv += golc ;
if (wgola[GOLA_VERBOSITY] && !uint0_scan(wgola[GOLA_VERBOSITY], &verbosity))
strerr_dief1x(100, "verbosity needs to be an unsigned integer") ;
if (wgola[GOLA_FORCELEVEL])
{
struct subname_s *p = bsearch(wgola[GOLA_FORCELEVEL], accepted_forcelevels, sizeof(accepted_forcelevels)/sizeof(struct subname_s), sizeof(struct subname_s), &subname_cmp) ;
if (!p) strerr_dief1x(100, "if-dependencies-found needs to be fail, warn or pull") ;
forcelevel = p->sub ;
}
if (argc < 3) dieusage() ;
if (strchr(argv[0], '/') || strchr(argv[0], '\n'))
strerr_dief1x(100, "set names cannot contain / or newlines") ;
newsub = bsearch(argv[1], accepted_subs, sizeof(accepted_subs)/sizeof(struct subname_s), sizeof(struct subname_s), &subname_cmp) ;
if (!newsub) strerr_dief2x(100, "unrecognized state change directive:", argv[1]) ;
if (newsub->sub == 3 && !(wgolb & GOLB_FORCE_ESSENTIAL))
strerr_diefu1x(10, " artificially mark a service as essential without --force-essential") ;
fdlock = s6rc_repo_lock(wgola[GOLA_REPODIR], 1) ;
if (fdlock == -1) strerr_diefu2sys(111, "lock ", wgola[GOLA_REPODIR]) ;
if (!s6rc_repo_makesvlist_byname(wgola[GOLA_REPODIR], argv[0], &storage, &svlist)) _exit(111) ;
list = genalloc_s(s6rc_repo_sv, &svlist) ;
listn = genalloc_len(s6rc_repo_sv, &svlist) ;
sabase = storage.len ;
{
int r = s6rc_repo_flattenservices(wgola[GOLA_REPODIR], argv + 2, argc - 2, &storage, &indices) ;
if (r) _exit(r) ;
}
n = genalloc_len(size_t, &indices) ;
if (!n) strerr_dief1x(101, "can't happen: 0 services in flattened list!") ;
s6rc_repo_sv starting[n] ;
uint32_t ind[n] ;
for (uint32_t i = 0 ; i < n ; i++)
{
char const *s = storage.s + genalloc_s(size_t, &indices)[i] ;
s6rc_repo_sv *p = bsearchr(s, list, listn, sizeof(s6rc_repo_sv), &s6rc_repo_sv_bcmpr, storage.s) ;
if (!p) strerr_dief7x(102, "inconsistent view in set ", argv[0], " of repository ", wgola[GOLA_REPODIR], ": service ", s, " is defined in the reference database but not in the textual representation of the set") ;
starting[i] = *p ;
ind[i] = p - list ;
max += strlen(s) + 1 ;
}
storage.len = sabase ;
genalloc_setlen(size_t, &indices, 0) ;
if (!(wgolb & GOLB_IGNORE_DEPENDENCIES))
{
size_t m = 0 ;
char const *tmpstart[n] ;
char tmpstore[max] ;
for (uint32_t i = 0 ; i < n ; i++)
{
size_t len ;
list[ind[i]].sub = newsub->sub ;
tmpstart[i] = tmpstore + m ;
len = strlen(storage.s + list[ind[i]].pos) + 1 ;
memcpy(tmpstore + m, storage.s + list[ind[i]].pos, len) ;
m += len ;
}
if (!s6rc_repo_badsub(wgola[GOLA_REPODIR], argv[0], tmpstart, n, newsub->sub, 3, list, listn, &storage, &indices)) _exit(111) ;
if (genalloc_len(uint32_t, &indices))
{
uint32_t const *bads = genalloc_s(uint32_t, &indices) ;
uint32_t badn = genalloc_len(uint32_t, &indices) ;
if (verbosity || !forcelevel)
{
char const *arg[10 + (badn << 1)] ;
arg[0] = PROG ;
arg[1] = ": " ;
arg[2] = !forcelevel ? "fatal" : "warning" ;
arg[3] = ": the following services (" ;
arg[4] = newsub->sub >= 2 ? "dependencies of" : "depending on" ;
arg[5] = " the ones given as arguments) " ;
arg[6] = forcelevel == 2 ? "are also being" : "also need to be" ;
arg[7] = " changed to \"" ;
arg[8] = s6rc_repo_subnames[newsub->sub] ;
arg[9] = "\": " ;
for (uint32_t i = 0 ; i < badn ; i++)
{
arg[10 + (i << 1)] = storage.s + list[bads[i]].pos ;
arg[11 + (i << 1)] = i < badn ? " " : "" ;
}
strerr_warnv(arg, 10 + (badn << 1)) ;
}
if (!forcelevel) _exit(1) ;
if (wgolb & GOLB_DRYRUN) _exit(0) ;
if (forcelevel == 2)
{
s6rc_repo_sv full[n + badn] ;
for (uint32_t i = 0 ; i < n ; i++) full[i] = starting[i] ;
for (uint32_t i = 0 ; i < badn ; i++) full[n + i] = list[bads[i]] ;
if (!s6rc_repo_moveservices(wgola[GOLA_REPODIR], argv[0], full, n + badn, newsub->sub, storage.s, verbosity)) _exit(111) ;
_exit(0) ;
}
}
}
genalloc_free(uint32_t, &indices) ;
stralloc_free(&storage) ;
if (!(wgolb & GOLB_DRYRUN))
{
if (!s6rc_repo_moveservices(wgola[GOLA_REPODIR], argv[0], starting, n, newsub->sub, storage.s, verbosity)) _exit(111) ;
}
_exit(0) ;
}
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