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/*
* Copyright 2005-2018 Gentoo Foundation
* Distributed under the terms of the GNU General Public License v2
*
* Copyright 2005-2010 Ned Ludd - <solar@gentoo.org>
* Copyright 2005-2014 Mike Frysinger - <vapier@gentoo.org>
*/
#if defined(__MACH__)
#include <libproc.h>
#endif
#define Q_FLAGS "irmM:" COMMON_FLAGS
static struct option const q_long_opts[] = {
{"install", no_argument, NULL, 'i'},
{"reinitialize", opt_argument, NULL, 'r'},
{"metacache", opt_argument, NULL, 'm'},
{"modpath", a_argument, NULL, 'M'},
COMMON_LONG_OPTS
};
static const char * const q_opts_help[] = {
"Install symlinks for applets",
"Reinitialize ebuild cache",
"Reinitialize metadata cache",
"Module path",
COMMON_OPTS_HELP
};
#define q_usage(ret) usage(ret, Q_FLAGS, q_long_opts, q_opts_help, NULL, lookup_applet_idx("q"))
static APPLET lookup_applet(const char *applet)
{
unsigned int i;
if (strlen(applet) < 1)
return NULL;
for (i = 0; applets[i].name; ++i) {
if (strcmp(applets[i].name, applet) == 0) {
argv0 = applets[i].name;
if (i && applets[i].desc != NULL) ++argv0; /* chop the leading 'q' */
return applets[i].func;
}
}
/* No applet found? Search by shortname then... */
for (i = 1; applets[i].desc != NULL; ++i) {
if (strcmp(applets[i].name + 1, applet) == 0) {
argv0 = applets[i].name + 1;
return applets[i].func;
}
}
/* still nothing ? those bastards ... */
warn("Unknown applet '%s'", applet);
return NULL;
}
int lookup_applet_idx(const char *applet)
{
unsigned int i;
for (i = 0; applets[i].name; i++)
if (strcmp(applets[i].name, applet) == 0)
return i;
return 0;
}
int q_main(int argc, char **argv)
{
int i, install;
const char *p;
APPLET func;
if (argc == 0)
return 1;
argv0 = p = basename(argv[0]);
if ((func = lookup_applet(p)) == NULL)
return 1;
if (strcmp("q", p) != 0)
return (func)(argc, argv);
if (argc == 1)
q_usage(EXIT_FAILURE);
install = 0;
while ((i = GETOPT_LONG(Q, q, "+")) != -1) {
switch (i) {
COMMON_GETOPTS_CASES(q)
case 'M': modpath = optarg; break;
case 'm':
if (optarg) {
const char *path = initialize_flat(optarg, CACHE_METADATA, true);
if (USE_CLEANUP)
free((void *)path);
reinitialize_metacache = -1;
} else
reinitialize_metacache = 1;
break;
case 'r':
if (optarg) {
const char *path = initialize_flat(optarg, CACHE_EBUILD, true);
if (USE_CLEANUP)
free((void *)path);
reinitialize = -1;
} else
reinitialize = 1;
break;
case 'i': install = 1; break;
}
}
if (install) {
char buf[_Q_PATH_MAX];
const char *prog, *dir;
ssize_t rret;
int fd, ret;
if (!quiet)
printf("Installing symlinks:\n");
#if defined(__MACH__)
rret = proc_pidpath(getpid(), buf, sizeof(buf));
if (rret != -1)
rret = strlen(buf);
#elif defined(__sun) && defined(__SVR4)
prog = getexecname();
rret = strlen(prog);
if ((size_t)rret > sizeof(buf) - 1) {
rret = -1;
} else {
strncpy(buf, prog, rret);
}
#else
rret = readlink("/proc/self/exe", buf, sizeof(buf) - 1);
#endif
if (rret == -1) {
warnfp("haha no symlink love for you");
return 1;
}
buf[rret] = '\0';
prog = basename(buf);
dir = dirname(buf);
fd = open(dir, O_RDONLY|O_CLOEXEC|O_PATH);
if (fd < 0) {
warnfp("open(%s) failed", dir);
return 1;
}
ret = 0;
for (i = 1; applets[i].desc; ++i) {
int r = symlinkat(prog, fd, applets[i].name);
if (!quiet)
printf(" %s ...\t[%s]\n", applets[i].name, r ? strerror(errno) : "OK");
if (r && errno != EEXIST)
ret = 1;
}
close(fd);
return ret;
}
if (reinitialize > 0 || reinitialize_metacache > 0)
return 0;
if (reinitialize < 0 || reinitialize_metacache < 0) {
reinitialize = reinitialize_metacache = 0;
return 0;
}
if (argc == optind)
q_usage(EXIT_FAILURE);
if ((func = lookup_applet(argv[optind])) == NULL)
return 1;
/* In case of "q --option ... appletname ...", remove appletname from the
* applet's args. */
if (optind > 1) {
argv[0] = argv[optind];
for (i = optind; i < argc; ++i)
argv[i] = argv[i + 1];
} else
++argv;
optind = 0; /* reset so the applets can call getopt */
return (func)(argc - 1, argv);
}
static int run_applet_l(const char *arg, ...)
{
int (*applet)(int, char **);
va_list ap;
int ret, optind_saved, argc;
char **argv;
const char *argv0_saved;
optind_saved = optind;
argv0_saved = argv0;
applet = lookup_applet(arg);
if (!applet)
return -1;
/* This doesn't NULL terminate argv, but you should be using argc */
va_start(ap, arg);
argc = 0;
argv = NULL;
while (arg) {
argv = xrealloc(argv, sizeof(*argv) * ++argc);
argv[argc - 1] = xstrdup(arg);
arg = va_arg(ap, const char *);
}
va_end(ap);
optind = 0;
argv0 = argv[0];
ret = applet(argc, argv);
while (argc--)
free(argv[argc]);
free(argv);
optind = optind_saved;
argv0 = argv0_saved;
return ret;
}
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