1
2
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4
5
6#include "toys.h"
7
8
9
10#undef NEWTOY
11#undef OLDTOY
12#define NEWTOY(name, opts, flags) {#name, name##_main, OPTSTR_##name, flags},
13#define OLDTOY(name, oldname, flags) \
14 {#name, oldname##_main, OPTSTR_##oldname, flags},
15
16struct toy_list toy_list[] = {
17#include "generated/newtoys.h"
18};
19
20
21
22struct toy_context toys;
23union global_union this;
24char *toybox_version = TOYBOX_VERSION, toybuf[4096], libbuf[4096];
25
26struct toy_list *toy_find(char *name)
27{
28 int top, bottom, middle;
29
30 if (!CFG_TOYBOX || strchr(name, '/')) return 0;
31
32
33 if (!toys.which && strstart(&name, toy_list->name)) return toy_list;
34 bottom = 1;
35
36
37 top = ARRAY_LEN(toy_list)-1;
38 for (;;) {
39 int result;
40
41 middle = (top+bottom)/2;
42 if (middle<bottom || middle>top) return 0;
43 result = strcmp(name,toy_list[middle].name);
44 if (!result) return toy_list+middle;
45 if (result<0) top = --middle;
46 else bottom = ++middle;
47 }
48}
49
50
51
52
53
54
55#undef NEWTOY
56#undef OLDTOY
57#define NEWTOY(name, opts, flags) opts ||
58#define OLDTOY(name, oldname, flags) OPTSTR_##oldname ||
59static const int NEED_OPTIONS =
60#include "generated/newtoys.h"
610;
62
63static void unknown(char *name)
64{
65 toys.exitval = 127;
66 toys.which = toy_list;
67 help_exit("Unknown command %s", name);
68}
69
70
71void check_help(char **arg)
72{
73 if (!CFG_TOYBOX_HELP_DASHDASH || !*arg || (toys.which->flags&TOYFLAG_NOHELP))
74 return;
75
76 if (!strcmp(*arg, "--help")) {
77 if (CFG_TOYBOX && toys.which == toy_list && arg[1])
78 if (!(toys.which = toy_find(arg[1]))) unknown(arg[1]);
79 show_help(stdout, 1);
80 xexit();
81 }
82
83 if (!strcmp(*arg, "--version")) {
84 xprintf("toybox %s\n", toybox_version);
85 xexit();
86 }
87}
88
89
90void toy_singleinit(struct toy_list *which, char *argv[])
91{
92 toys.which = which;
93 toys.argv = argv;
94 toys.toycount = ARRAY_LEN(toy_list);
95
96 if (NEED_OPTIONS && which->options) get_optflags();
97 else {
98 check_help(toys.optargs = argv+1);
99 for (toys.optc = 0; toys.optargs[toys.optc]; toys.optc++);
100 }
101
102 if (!(CFG_TOYBOX && which == toy_list) && !(which->flags & TOYFLAG_NOFORK)) {
103 toys.old_umask = umask(0);
104 if (!(which->flags & TOYFLAG_UMASK)) umask(toys.old_umask);
105
106
107
108
109 setlocale(LC_CTYPE, "");
110 if (strcmp("UTF-8", nl_langinfo(CODESET)))
111 uselocale(newlocale(LC_CTYPE_MASK, "en_US.UTF-8", NULL));
112
113 setvbuf(stdout, 0, (which->flags & TOYFLAG_LINEBUF) ? _IOLBF : _IONBF, 0);
114 }
115}
116
117
118void toy_init(struct toy_list *which, char *argv[])
119{
120 void *oldwhich = toys.which;
121
122
123
124 if (CFG_TOYBOX_SUID) {
125 if (!toys.which) toys.which = toy_list;
126
127 uid_t uid = getuid(), euid = geteuid();
128
129 if (!(which->flags & TOYFLAG_STAYROOT)) {
130 if (uid != euid) {
131 if (setuid(uid)) perror_exit("setuid %d->%d", euid, uid);
132 euid = uid;
133 toys.wasroot++;
134 }
135 } else if (CFG_TOYBOX_DEBUG && uid && which != toy_list)
136 error_msg("Not installed suid root");
137
138 if ((which->flags & TOYFLAG_NEEDROOT) && euid) {
139 check_help(argv+1);
140 help_exit("Not root");
141 }
142 }
143
144
145
146 if (argv<toys.optargs || argv>toys.optargs+toys.optc) free(toys.optargs);
147 memset(&toys, 0, offsetof(struct toy_context, rebound));
148 if (oldwhich) memset(&this, 0, sizeof(this));
149
150
151 toy_singleinit(which, argv);
152}
153
154
155
156static void toy_exec_which(struct toy_list *which, char *argv[])
157{
158
159 if (!which || (which->flags&TOYFLAG_NOFORK)) return;
160
161
162
163
164
165
166
167 if (!CFG_TOYBOX_NORECURSE && toys.stacktop)
168 if (labs((long)toys.stacktop-(long)&which)>6000) return;
169
170
171 if (toys.which && (which->flags&TOYFLAG_ROOTONLY) && toys.wasroot) return;
172
173
174 toy_init(which, argv);
175 if (toys.which) toys.which->toy_main();
176 xexit();
177}
178
179
180void toy_exec(char *argv[])
181{
182 toy_exec_which(toy_find(*argv), argv);
183}
184
185
186
187void toybox_main(void)
188{
189 char *toy_paths[] = {"usr/", "bin/", "sbin/", 0}, *s = toys.argv[1];
190 int i, len = 0;
191 unsigned width = 80;
192
193
194
195
196 while (s) {
197 struct toy_list *tl = toy_find(basename(s));
198
199 if (tl==toy_list && s!=toys.argv[1]) unknown(basename(s));
200 toy_exec_which(toy_find(basename(s)), toys.argv+1);
201 s = (0<readlink(s, libbuf, sizeof(libbuf))) ? libbuf : 0;
202 }
203
204
205 toys.which = toy_list;
206
207 if (toys.argv[1] && strcmp(toys.argv[1], "--long")) unknown(toys.argv[1]);
208
209
210 terminal_size(&width, 0);
211 for (i = 1; i<ARRAY_LEN(toy_list); i++) {
212 int fl = toy_list[i].flags;
213 if (fl & TOYMASK_LOCATION) {
214 if (toys.argv[1]) {
215 int j;
216 for (j = 0; toy_paths[j]; j++)
217 if (fl & (1<<j)) len += printf("%s", toy_paths[j]);
218 }
219 len += printf("%s",toy_list[i].name);
220 if (++len > width-15) len = 0;
221 xputc(len ? ' ' : '\n');
222 }
223 }
224 xputc('\n');
225}
226
227int main(int argc, char *argv[])
228{
229
230 if (!*argv) return 127;
231
232
233
234 if (!CFG_TOYBOX_FORK && (0x80 & **argv)) **argv &= 0x7f;
235 else {
236 int stack_start;
237
238 toys.stacktop = &stack_start;
239 }
240
241
242 if (CFG_TOYBOX_ON_ANDROID) signal(SIGPIPE, SIG_DFL);
243
244 if (CFG_TOYBOX) {
245
246 toys.argv = argv-1;
247 toybox_main();
248 } else {
249
250 toy_singleinit(toy_list, argv);
251 toy_list->toy_main();
252 }
253
254 xexit();
255}
256