1
2
3
4
5
6#include "toys.h"
7
8#ifndef TOYBOX_VERSION
9#ifndef TOYBOX_VENDOR
10#define TOYBOX_VENDOR ""
11#endif
12#define TOYBOX_VERSION "0.8.1"TOYBOX_VENDOR
13#endif
14
15
16
17#undef NEWTOY
18#undef OLDTOY
19#define NEWTOY(name, opts, flags) {#name, name##_main, OPTSTR_##name, flags},
20#define OLDTOY(name, oldname, flags) \
21 {#name, oldname##_main, OPTSTR_##oldname, flags},
22
23struct toy_list toy_list[] = {
24#include "generated/newtoys.h"
25};
26
27
28
29struct toy_context toys;
30union global_union this;
31char toybuf[4096], libbuf[4096];
32
33struct toy_list *toy_find(char *name)
34{
35 int top, bottom, middle;
36
37 if (!CFG_TOYBOX || strchr(name, '/')) return 0;
38
39
40
41
42 if (!strncmp(name,"toybox",6)) return toy_list;
43 bottom = 1;
44
45
46
47 top = ARRAY_LEN(toy_list)-1;
48 for (;;) {
49 int result;
50
51 middle = (top+bottom)/2;
52 if (middle<bottom || middle>top) return NULL;
53 result = strcmp(name,toy_list[middle].name);
54 if (!result) return toy_list+middle;
55 if (result<0) top = --middle;
56 else bottom = ++middle;
57 }
58}
59
60
61
62
63
64
65#undef NEWTOY
66#undef OLDTOY
67#define NEWTOY(name, opts, flags) opts ||
68#define OLDTOY(name, oldname, flags) OPTSTR_##oldname ||
69static const int NEED_OPTIONS =
70#include "generated/newtoys.h"
710;
72
73static void unknown(char *name)
74{
75 toys.exitval = 127;
76 toys.which = toy_list;
77 error_exit("Unknown command %s", name);
78}
79
80
81static void toy_singleinit(struct toy_list *which, char *argv[])
82{
83 toys.which = which;
84 toys.argv = argv;
85
86 if (CFG_TOYBOX_I18N) setlocale(LC_CTYPE, "C.UTF-8");
87 setlinebuf(stdout);
88
89
90 if (CFG_TOYBOX_HELP_DASHDASH && !(which->flags & TOYFLAG_NOHELP) && argv[1]) {
91 if (!strcmp(argv[1], "--help")) {
92 if (CFG_TOYBOX && toys.which == toy_list && toys.argv[2])
93 if (!(toys.which = toy_find(toys.argv[2]))) unknown(toys.argv[2]);
94 show_help(stdout);
95 xexit();
96 }
97
98 if (!strcmp(argv[1], "--version")) {
99 xputs("toybox "TOYBOX_VERSION);
100 xexit();
101 }
102 }
103
104 if (NEED_OPTIONS && which->options) get_optflags();
105 else {
106 toys.optargs = argv+1;
107 for (toys.optc = 0; toys.optargs[toys.optc]; toys.optc++);
108 }
109 toys.old_umask = umask(0);
110 if (!(which->flags & TOYFLAG_UMASK)) umask(toys.old_umask);
111 toys.signalfd--;
112 toys.toycount = ARRAY_LEN(toy_list);
113}
114
115
116void toy_init(struct toy_list *which, char *argv[])
117{
118 void *oldwhich = toys.which;
119
120
121
122 if (CFG_TOYBOX_SUID) {
123 if (!toys.which) toys.which = toy_list;
124
125 uid_t uid = getuid(), euid = geteuid();
126
127 if (!(which->flags & TOYFLAG_STAYROOT)) {
128 if (uid != euid) {
129 if (setuid(uid)) perror_exit("setuid %d->%d", euid, uid);
130 euid = uid;
131 toys.wasroot++;
132 }
133 } else if (CFG_TOYBOX_DEBUG && uid && which != toy_list)
134 error_msg("Not installed suid root");
135
136 if ((which->flags & TOYFLAG_NEEDROOT) && euid) help_exit("Not root");
137 }
138
139
140
141 if (argv<toys.optargs || argv>toys.optargs+toys.optc) free(toys.optargs);
142 memset(&toys, 0, offsetof(struct toy_context, rebound));
143 if (oldwhich) memset(&this, 0, sizeof(this));
144
145
146 toy_singleinit(which, argv);
147}
148
149
150
151void toy_exec_which(struct toy_list *which, char *argv[])
152{
153
154 if (!which) return;
155
156
157
158
159
160
161
162 if (!CFG_TOYBOX_NORECURSE && toys.stacktop)
163 if (labs((long)toys.stacktop-(long)&which)>6000) return;
164
165
166 if (toys.which && (which->flags&TOYFLAG_ROOTONLY) && toys.wasroot) return;
167
168
169 toy_init(which, argv);
170 if (toys.which) toys.which->toy_main();
171 xexit();
172}
173
174
175void toy_exec(char *argv[])
176{
177 toy_exec_which(toy_find(basename(*argv)), argv);
178}
179
180
181
182void toybox_main(void)
183{
184 static char *toy_paths[]={"usr/","bin/","sbin/",0};
185 int i, len = 0;
186
187
188
189
190 if (toys.argv[1]) {
191 toy_exec(toys.argv+1);
192 if (0<readlink(toys.argv[1], libbuf, sizeof(libbuf)))
193 toy_exec_which(toy_find(basename(libbuf)), toys.argv);
194 }
195
196
197 toys.which = toy_list;
198
199 if (toys.argv[1] && toys.argv[1][0] != '-') unknown(toys.argv[1]);
200
201
202 for (i=1; i<ARRAY_LEN(toy_list); i++) {
203 int fl = toy_list[i].flags;
204 if (fl & TOYMASK_LOCATION) {
205 if (toys.argv[1]) {
206 int j;
207 for (j=0; toy_paths[j]; j++)
208 if (fl & (1<<j)) len += printf("%s", toy_paths[j]);
209 }
210 len += printf("%s",toy_list[i].name);
211 if (++len > 65) len = 0;
212 xputc(len ? ' ' : '\n');
213 }
214 }
215 xputc('\n');
216}
217
218int main(int argc, char *argv[])
219{
220 if (!*argv) return 127;
221
222
223
224 else {
225 int stack;
226
227 toys.stacktop = &stack;
228 }
229
230
231
232
233
234
235
236 if (CFG_TOYBOX_ON_ANDROID) signal(SIGPIPE, SIG_DFL);
237
238
239
240 if (!CFG_TOYBOX_FORK) {
241 if (0x80 & **argv) {
242 **argv &= 0x7f;
243 toys.stacktop = 0;
244 }
245 }
246
247 if (CFG_TOYBOX) {
248
249
250 toys.argv = argv-1;
251 toybox_main();
252 } else {
253
254 toy_singleinit(toy_list, argv);
255 toy_list->toy_main();
256 }
257
258 xexit();
259}
260