1: /*************************************************************************
2: * (C) 2011 AITNET - Sofia/Bulgaria - <office@aitbg.com>
3: * by Michael Pounov <misho@aitbg.com>
4: *
5: * $Author: misho $
6: * $Id: sux.c,v 1.3.2.3 2013/04/09 08:56:57 misho Exp $
7: *
8: *************************************************************************/
9: #include "global.h"
10:
11:
12: cfg_root_t cfg;
13: int Verbose;
14: struct tagProc proc;
15: FILE *lf;
16:
17:
18: static inline void
19: Log(int lvl, const char *fmt, ...)
20: {
21: va_list lst, cp;
22:
23: EVERBS(lvl) {
24: va_start(lst, fmt);
25: va_copy(cp, lst);
26: vfprintf(lf, fmt, lst);
27: va_end(lst);
28: fprintf(lf, "\n");
29: vsyslog(LOG_WARNING, fmt, cp);
30: va_end(cp);
31: }
32: }
33:
34: static inline void
35: Err(const char *fmt, ...)
36: {
37: va_list lst, cp;
38:
39: va_start(lst, fmt);
40: va_copy(cp, lst);
41: vfprintf(lf, fmt, lst);
42: va_end(lst);
43: fprintf(lf, "\n");
44: vsyslog(LOG_ERR, fmt, cp);
45: va_end(cp);
46: }
47:
48: static void
49: initProg()
50: {
51: char d[MAXPATHLEN];
52:
53: AIT_SET_I16(&proc.proc_uid, getuid());
54: AIT_SET_I16(&proc.proc_gid, getgid());
55: AIT_SET_I32(&proc.proc_prio, getpriority(PRIO_PROCESS, 0));
56: getcwd(d, sizeof d);
57: AIT_SET_STR(&proc.proc_dir, d);
58:
59: #if 0
60: lf = fopen(DEFAULT_LOG, "a");
61: if (!lf)
62: #endif
63: lf = stdout;
64:
65: openlog(PACKAGE_NAME, LOG_CONS | LOG_PID | LOG_NDELAY, LOG_USER);
66: }
67:
68: static void
69: endProg()
70: {
71: AIT_FREE_VAL(&proc.proc_uid);
72: AIT_FREE_VAL(&proc.proc_gid);
73: AIT_FREE_VAL(&proc.proc_prio);
74: AIT_FREE_VAL(&proc.proc_class);
75: AIT_FREE_VAL(&proc.proc_dir);
76: AIT_FREE_VAL(&proc.proc_name);
77: AIT_FREE_VAL(&proc.proc_cmd);
78: }
79:
80: static void
81: Usage()
82: {
83: printf( " -= suX =- suExecutor designed for web based applicaions\n"
84: "(C)`11 AITNET ltd - Sofia/Bulgaria - <office@aitnet.org>\n\n"
85: " Syntax: %s [options] <program> [arguments]\n"
86: "\t-u <user>\t\t\tUser for suID\n"
87: "\t-g <group>\t\t\tGroup for suID\n"
88: "\t-p <priority (-20..20)>\t\tExecute with priority\n"
89: "\t-d <directory>\t\t\tDirectory for suID\n"
90: "\t-C <directory>\t\t\tChroot to directory\n"
91: "\t-c <cfgfile>\t\t\tConfig file\n"
92: "\t-l <logfile>\t\t\tLog file path (default:/var/log/suX.log)\n"
93: "\t-o\t\t\t\tForce set UID,GID and Priority for program\n"
94: "\t-v\t\t\t\tVerbose, (more -v, more verbosity)\n"
95: "\t-h\t\t\t\tThis help screen!\n\n", PACKAGE_NAME);
96: }
97:
98: static inline int
99: setUIDGID(char flg, const char *name)
100: {
101: struct stat sb;
102:
103: if (stat(name, &sb) == -1) {
104: ESYSERR(0);
105: return -1;
106: }
107:
108: if (!(flg & SUX_GET_UID))
109: AIT_SET_I16(&proc.proc_uid, sb.st_uid);
110: if (!(flg & SUX_GET_GID))
111: AIT_SET_I16(&proc.proc_gid, sb.st_gid);
112:
113: return 0;
114: }
115:
116: static inline int
117: SetClass()
118: {
119: login_cap_t *cap;
120: struct passwd *pass;
121:
122: pass = getpwuid(AIT_GET_I16(&proc.proc_uid));
123: if (!pass) {
124: Err("Error:: User with this UID %d not found", AIT_GET_I16(&proc.proc_uid));
125: endpwent();
126: return -1;
127: } else
128: AIT_SET_STR(&proc.proc_class, pass->pw_class);
129:
130: cap = login_getclass(AIT_GET_STR(&proc.proc_class));
131: if (!cap) {
132: Err("Error:: Cant get login class %s", AIT_GET_STR(&proc.proc_class));
133: endpwent();
134: return -1;
135: }
136:
137: if (setusercontext(cap, pass, AIT_GET_I16(&proc.proc_uid), LOGIN_SETALL)) {
138: Err("Error:: Cant set login class %s", AIT_GET_STR(&proc.proc_class));
139: login_close(cap);
140: endpwent();
141: return -1;
142: }
143:
144: login_close(cap);
145: endpwent();
146: return 0;
147: }
148:
149: static int
150: LoadCfgData(char flg)
151: {
152: const char *str;
153: char mode = 0;
154:
155: str = cfg_getAttribute(&cfg, "global", "mode");
156: if (!str) {
157: Err("Error:: Unknown mode ...");
158: return -1;
159: }
160: if (!strcasecmp(str, "SCRIPT")) {
161: mode = 1;
162: if (setUIDGID(flg, AIT_GET_STR(&proc.proc_name)) == -1)
163: return -1;
164: } else if (!strcasecmp(str, "FILE")) {
165: mode = 2;
166: if (setUIDGID(flg, AIT_GET_STR(&proc.proc_name)) == -1)
167: return -1;
168: } else if (!strcasecmp(str, "DIR") &&
169: (str = cfg_getAttribute(&cfg, "global", "directory"))) {
170: mode = 3;
171: if (!(flg & SUX_GET_DIR))
172: AIT_SET_STR(&proc.proc_dir, str);
173:
174: if (setUIDGID(flg, AIT_GET_STR(&proc.proc_dir)) == -1)
175: return -1;
176: } else {
177: Err("Error:: Unknown mode %s", str);
178: return -1;
179: }
180: if (!(flg & SUX_GET_PRIO)) {
181: str = cfg_getAttribute(&cfg, "global", "priority");
182: if (str)
183: AIT_SET_I32(&proc.proc_prio, strtol(str, NULL, 10));
184: }
185:
186: /* find associate extension */
187: str = strrchr(AIT_GET_STR(&proc.proc_name), '.');
188: if (str) {
189: str++;
190: str = (*str) ? str : "default";
191: switch (cfg_loadAttribute(&cfg, "associate", str, &proc.proc_cmd, NULL)) {
192: case -1:
193: ELIBERR(cfg);
194: return -1;
195: case 0:
196: cfg_loadAttribute(&cfg, "associate", "default", &proc.proc_cmd, DEFAULT_CMD);
197: }
198: } else
199: AIT_SET_STR(&proc.proc_cmd, DEFAULT_CMD);
200:
201: return 0;
202: }
203:
204: static int
205: Run(char **argv, char flg)
206: {
207: char **args, *cmd;
208: array_t *acmd, *aarg;
209: int n;
210:
211: if (!argv)
212: return -1;
213:
214: n = array_Args(AIT_GET_STR(&proc.proc_cmd), 0, " \t", &acmd);
215: if (n < 1)
216: return -1;
217: if (!(aarg = array_From((const char***) &argv, 0))) {
218: array_Destroy(&acmd);
219: return -1;
220: } else if (*array(acmd, 0, char*) == '!') {
221: if (array_Grow(acmd, 0, 0)) {
222: array_Destroy(&aarg);
223: array_Destroy(&acmd);
224: return -1;
225: }
226: cmd = array(aarg, 0, char*);
227: } else
228: cmd = array(acmd, 0, char*);
229:
230: if (array_Concat(acmd, aarg) == -1) {
231: array_Destroy(&aarg);
232: array_Destroy(&acmd);
233: return -1;
234: }
235: array_Destroy(&aarg);
236: if (!(args = array_To(acmd))) {
237: array_Destroy(&acmd);
238: return -1;
239: }
240: array_Destroy(&acmd);
241:
242: if (SetClass()) {
243: if (args)
244: e_free(args);
245: return -1;
246: }
247:
248: if (flg & SUX_GET_FORCE) {
249: if (setgid(AIT_GET_I16(&proc.proc_gid)) == -1) {
250: ESYSERR(0);
251: if (args)
252: free(args);
253: return -1;
254: }
255: if (setuid(AIT_GET_I16(&proc.proc_uid)) == -1) {
256: ESYSERR(0);
257: if (args)
258: free(args);
259: return -1;
260: }
261: if (setpriority(PRIO_PROCESS, 0, AIT_GET_I32(&proc.proc_prio)) == -1) {
262: ESYSERR(0);
263: if (args)
264: free(args);
265: return -1;
266: }
267: }
268:
269: Log(0, "UID:GID=%d:%d Prio=%d Class=%s Name=%s Dir=%s Cmd=%s Script=%s",
270: proc.proc_uid, proc.proc_gid, proc.proc_prio, AIT_GET_STR(&proc.proc_class),
271: AIT_GET_STR(&proc.proc_name), AIT_GET_STR(&proc.proc_dir),
272: AIT_GET_STR(&proc.proc_cmd), getenv("PATH_TRANSLATED"));
273:
274: EVERBS(3) {
275: char **el = args - 1;
276: while (*++el)
277: Log(3, "args: %s", *el);
278: }
279:
280: fflush(lf);
281:
282: execve(cmd, args, environ);
283: if (args)
284: free(args);
285: ESYSERR(0);
286: return -1;
287: }
288:
289:
290: int
291: main(int argc, char **argv)
292: {
293: char ch, *str, *wrk, szCfg[MAXPATHLEN], **pp, flg = 0;
294: struct passwd *pass;
295: struct group *grp;
296: FILE *f;
297:
298: initProg();
299: strlcpy(szCfg, DEFAULT_CONFIG, sizeof szCfg);
300:
301: while ((ch = getopt(argc, argv, "hvoC:c:u:g:p:d:l:")) != -1)
302: switch (ch) {
303: case 'l':
304: f = fopen(optarg, "a");
305: if (!f) {
306: Err("Error:: logfile #%d - %s", errno, strerror(errno));
307: return 1;
308: } else
309: if (fileno(lf) > 2)
310: fclose(lf);
311: lf = f;
312: break;
313: case 'd':
314: AIT_SET_STR(&proc.proc_dir, optarg);
315: flg |= SUX_GET_DIR;
316: break;
317: case 'p':
318: AIT_SET_I32(&proc.proc_prio, strtol(optarg, NULL, 0));
319: flg |= SUX_GET_PRIO;
320: break;
321: case 'g':
322: setgrent();
323: grp = getgrnam(optarg);
324: if (grp) {
325: AIT_SET_I16(&proc.proc_gid, grp->gr_gid);
326: flg |= SUX_GET_GID;
327: } else
328: Err("Error:: Group not found!");
329: endgrent();
330: break;
331: case 'u':
332: setpwent();
333: pass = getpwnam(optarg);
334: if (pass) {
335: AIT_SET_I16(&proc.proc_uid, pass->pw_uid);
336: flg |= SUX_GET_UID;
337: } else
338: Err("Error:: User not found!");
339: endpwent();
340: break;
341: case 'c':
342: strlcpy(szCfg, optarg, sizeof szCfg);
343: break;
344: case 'C':
345: if (chroot(optarg) == -1)
346: Err("Error:: chroot to dir");
347: if ((str = getenv("PATH_TRANSLATED")))
348: if ((wrk = strstr(str, optarg)))
349: setenv("PATH_TRANSLATED", str + strlen(optarg), 42);
350: break;
351: case 'o':
352: flg |= SUX_GET_FORCE;
353: break;
354: case 'v':
355: e_incVerbose;
356: break;
357: case 'h':
358: default:
359: Usage();
360: endProg();
361: if (fileno(lf) > 2)
362: fclose(lf);
363: return 1;
364: }
365: argc -= optind;
366: argv += optind;
367:
368: EVERBS(2) {
369: for (pp = argv; *pp; pp++)
370: Log(2, "Args=%s\n", *pp);
371: for (pp = environ; *pp; pp++)
372: Log(2, "Envs=%s\n", *pp);
373: }
374:
375: if (!argc) {
376: if (!(str = getenv("PATH_TRANSLATED"))) {
377: Usage();
378: endProg();
379: if (fileno(lf) > 2)
380: fclose(lf);
381: return 1;
382: } else
383: AIT_SET_STR(&proc.proc_name, str);
384: } else
385: AIT_SET_STR(&proc.proc_name, *argv);
386: Log(2, "Try to load config %s", szCfg);
387: if (cfgLoadConfig(szCfg, &cfg)) {
388: ELIBERR(cfg);
389: endProg();
390: if (fileno(lf) > 2)
391: fclose(lf);
392: return 2;
393: } else
394: if (LoadCfgData(flg) == -1) {
395: cfgUnloadConfig(&cfg);
396: endProg();
397: if (fileno(lf) > 2)
398: fclose(lf);
399: closelog();
400: return 3;
401: }
402: cfgUnloadConfig(&cfg);
403:
404: if (Run(argv, flg) == -1) {
405: endProg();
406: if (fileno(lf) > 2)
407: fclose(lf);
408: closelog();
409: return 4;
410: }
411:
412: endProg();
413: if (fileno(lf) > 2)
414: fclose(lf);
415: closelog();
416: return 0;
417: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to sux.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / suX / src