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eng_ctrl.c

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1/* $OpenBSD: eng_ctrl.c,v 1.11 2017/01/29 17:49:23 beck Exp $ */-
2/* ====================================================================-
3 * Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.-
4 *-
5 * Redistribution and use in source and binary forms, with or without-
6 * modification, are permitted provided that the following conditions-
7 * are met:-
8 *-
9 * 1. Redistributions of source code must retain the above copyright-
10 * notice, this list of conditions and the following disclaimer.-
11 *-
12 * 2. Redistributions in binary form must reproduce the above copyright-
13 * notice, this list of conditions and the following disclaimer in-
14 * the documentation and/or other materials provided with the-
15 * distribution.-
16 *-
17 * 3. All advertising materials mentioning features or use of this-
18 * software must display the following acknowledgment:-
19 * "This product includes software developed by the OpenSSL Project-
20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"-
21 *-
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to-
23 * endorse or promote products derived from this software without-
24 * prior written permission. For written permission, please contact-
25 * licensing@OpenSSL.org.-
26 *-
27 * 5. Products derived from this software may not be called "OpenSSL"-
28 * nor may "OpenSSL" appear in their names without prior written-
29 * permission of the OpenSSL Project.-
30 *-
31 * 6. Redistributions of any form whatsoever must retain the following-
32 * acknowledgment:-
33 * "This product includes software developed by the OpenSSL Project-
34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"-
35 *-
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY-
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE-
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR-
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR-
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,-
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT-
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;-
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)-
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,-
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)-
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED-
47 * OF THE POSSIBILITY OF SUCH DAMAGE.-
48 * ====================================================================-
49 *-
50 * This product includes cryptographic software written by Eric Young-
51 * (eay@cryptsoft.com). This product includes software written by Tim-
52 * Hudson (tjh@cryptsoft.com).-
53 *-
54 */-
55-
56#include <string.h>-
57-
58#include <openssl/err.h>-
59-
60#include "eng_int.h"-
61-
62/* When querying a ENGINE-specific control command's 'description', this string-
63 * is used if the ENGINE_CMD_DEFN has cmd_desc set to NULL. */-
64static const char *int_no_description = "";-
65-
66/* These internal functions handle 'CMD'-related control commands when the-
67 * ENGINE in question has asked us to take care of it (ie. the ENGINE did not-
68 * set the ENGINE_FLAGS_MANUAL_CMD_CTRL flag. */-
69-
70static int-
71int_ctrl_cmd_is_null(const ENGINE_CMD_DEFN *defn)-
72{-
73 if ((defn->cmd_num == 0) || (defn->cmd_name == NULL))
(defn->cmd_num == 0)Description
TRUEnever evaluated
FALSEnever evaluated
(defn->cmd_nam... ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
74 return 1;
never executed: return 1;
0
75 return 0;
never executed: return 0;
0
76}-
77-
78static int-
79int_ctrl_cmd_by_name(const ENGINE_CMD_DEFN *defn, const char *s)-
80{-
81 int idx = 0;-
82 while (!int_ctrl_cmd_is_null(defn) &&
!int_ctrl_cmd_is_null(defn)Description
TRUEnever evaluated
FALSEnever evaluated
0
83 (strcmp(defn->cmd_name, s) != 0)) {
never executed: __result = (((const unsigned char *) (const char *) ( defn->cmd_name ))[3] - __s2[3]);
never executed: end of block
never executed: end of block
never executed: __result = (((const unsigned char *) (const char *) ( s ))[3] - __s2[3]);
never executed: end of block
never executed: end of block
( __extension_...)))); }) != 0)Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 0Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 1Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s1_len > 2Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 0Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 1Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
__s2_len > 2Description
TRUEnever evaluated
FALSEnever evaluated
__result == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
84 idx++;-
85 defn++;-
86 }
never executed: end of block
0
87 if (int_ctrl_cmd_is_null(defn))
int_ctrl_cmd_is_null(defn)Description
TRUEnever evaluated
FALSEnever evaluated
0
88 /* The given name wasn't found */-
89 return -1;
never executed: return -1;
0
90 return idx;
never executed: return idx;
0
91}-
92-
93static int-
94int_ctrl_cmd_by_num(const ENGINE_CMD_DEFN *defn, unsigned int num)-
95{-
96 int idx = 0;-
97 /* NB: It is stipulated that 'cmd_defn' lists are ordered by cmd_num. So-
98 * our searches don't need to take any longer than necessary. */-
99 while (!int_ctrl_cmd_is_null(defn) && (defn->cmd_num < num)) {
!int_ctrl_cmd_is_null(defn)Description
TRUEnever evaluated
FALSEnever evaluated
(defn->cmd_num < num)Description
TRUEnever evaluated
FALSEnever evaluated
0
100 idx++;-
101 defn++;-
102 }
never executed: end of block
0
103 if (defn->cmd_num == num)
defn->cmd_num == numDescription
TRUEnever evaluated
FALSEnever evaluated
0
104 return idx;
never executed: return idx;
0
105 /* The given cmd_num wasn't found */-
106 return -1;
never executed: return -1;
0
107}-
108-
109static int-
110int_ctrl_helper(ENGINE *e, int cmd, long i, void *p, void (*f)(void))-
111{-
112 int idx;-
113 int ret;-
114 char *s = (char *)p;-
115-
116 /* Take care of the easy one first (eg. it requires no searches) */-
117 if (cmd == ENGINE_CTRL_GET_FIRST_CMD_TYPE) {
cmd == 11Description
TRUEnever evaluated
FALSEnever evaluated
0
118 if ((e->cmd_defns == NULL) ||
(e->cmd_defns == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
119 int_ctrl_cmd_is_null(e->cmd_defns))
int_ctrl_cmd_i...(e->cmd_defns)Description
TRUEnever evaluated
FALSEnever evaluated
0
120 return 0;
never executed: return 0;
0
121 return e->cmd_defns->cmd_num;
never executed: return e->cmd_defns->cmd_num;
0
122 }-
123 /* One or two commands require that "p" be a valid string buffer */-
124 if ((cmd == ENGINE_CTRL_GET_CMD_FROM_NAME) ||
(cmd == 13)Description
TRUEnever evaluated
FALSEnever evaluated
0
125 (cmd == ENGINE_CTRL_GET_NAME_FROM_CMD) ||
(cmd == 15)Description
TRUEnever evaluated
FALSEnever evaluated
0
126 (cmd == ENGINE_CTRL_GET_DESC_FROM_CMD)) {
(cmd == 17)Description
TRUEnever evaluated
FALSEnever evaluated
0
127 if (s == NULL) {
s == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
128 ENGINEerror(ERR_R_PASSED_NULL_PARAMETER);-
129 return -1;
never executed: return -1;
0
130 }-
131 }
never executed: end of block
0
132 /* Now handle cmd_name -> cmd_num conversion */-
133 if (cmd == ENGINE_CTRL_GET_CMD_FROM_NAME) {
cmd == 13Description
TRUEnever evaluated
FALSEnever evaluated
0
134 if ((e->cmd_defns == NULL) ||
(e->cmd_defns == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
135 ((idx = int_ctrl_cmd_by_name(e->cmd_defns, s)) < 0)) {
((idx = int_ct...efns, s)) < 0)Description
TRUEnever evaluated
FALSEnever evaluated
0
136 ENGINEerror(ENGINE_R_INVALID_CMD_NAME);-
137 return -1;
never executed: return -1;
0
138 }-
139 return e->cmd_defns[idx].cmd_num;
never executed: return e->cmd_defns[idx].cmd_num;
0
140 }-
141 /* For the rest of the commands, the 'long' argument must specify a-
142 * valie command number - so we need to conduct a search. */-
143 if ((e->cmd_defns == NULL) ||
(e->cmd_defns == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
144 ((idx = int_ctrl_cmd_by_num(e->cmd_defns, (unsigned int)i)) < 0)) {
((idx = int_ct...d int)i)) < 0)Description
TRUEnever evaluated
FALSEnever evaluated
0
145 ENGINEerror(ENGINE_R_INVALID_CMD_NUMBER);-
146 return -1;
never executed: return -1;
0
147 }-
148 /* Now the logic splits depending on command type */-
149 switch (cmd) {-
150 case ENGINE_CTRL_GET_NEXT_CMD_TYPE:
never executed: case 12:
0
151 idx++;-
152 if (int_ctrl_cmd_is_null(e->cmd_defns + idx))
int_ctrl_cmd_i...d_defns + idx)Description
TRUEnever evaluated
FALSEnever evaluated
0
153 /* end-of-list */-
154 return 0;
never executed: return 0;
0
155 else-
156 return e->cmd_defns[idx].cmd_num;
never executed: return e->cmd_defns[idx].cmd_num;
0
157 case ENGINE_CTRL_GET_NAME_LEN_FROM_CMD:
never executed: case 14:
0
158 return strlen(e->cmd_defns[idx].cmd_name);
never executed: return strlen(e->cmd_defns[idx].cmd_name);
0
159 case ENGINE_CTRL_GET_NAME_FROM_CMD:
never executed: case 15:
0
160 ret = snprintf(s, strlen(e->cmd_defns[idx].cmd_name) + 1,-
161 "%s", e->cmd_defns[idx].cmd_name);-
162 if (ret >= (strlen(e->cmd_defns[idx].cmd_name) + 1))
ret >= (strlen...cmd_name) + 1)Description
TRUEnever evaluated
FALSEnever evaluated
0
163 ret = -1;
never executed: ret = -1;
0
164 return ret;
never executed: return ret;
0
165 case ENGINE_CTRL_GET_DESC_LEN_FROM_CMD:
never executed: case 16:
0
166 if (e->cmd_defns[idx].cmd_desc)
e->cmd_defns[idx].cmd_descDescription
TRUEnever evaluated
FALSEnever evaluated
0
167 return strlen(e->cmd_defns[idx].cmd_desc);
never executed: return strlen(e->cmd_defns[idx].cmd_desc);
0
168 return strlen(int_no_description);
never executed: return strlen(int_no_description);
0
169 case ENGINE_CTRL_GET_DESC_FROM_CMD:
never executed: case 17:
0
170 if (e->cmd_defns[idx].cmd_desc) {
e->cmd_defns[idx].cmd_descDescription
TRUEnever evaluated
FALSEnever evaluated
0
171 ret = snprintf(s,-
172 strlen(e->cmd_defns[idx].cmd_desc) + 1,-
173 "%s", e->cmd_defns[idx].cmd_desc);-
174 if (ret >= strlen(e->cmd_defns[idx].cmd_desc) + 1)
ret >= strlen(....cmd_desc) + 1Description
TRUEnever evaluated
FALSEnever evaluated
0
175 ret = -1;
never executed: ret = -1;
0
176 return ret;
never executed: return ret;
0
177 }-
178 ret = snprintf(s, strlen(int_no_description) + 1, "%s",-
179 int_no_description);-
180 if (ret >= strlen(int_no_description) + 1)
ret >= strlen(...scription) + 1Description
TRUEnever evaluated
FALSEnever evaluated
0
181 ret = -1;
never executed: ret = -1;
0
182 return ret;
never executed: return ret;
0
183 case ENGINE_CTRL_GET_CMD_FLAGS:
never executed: case 18:
0
184 return e->cmd_defns[idx].cmd_flags;
never executed: return e->cmd_defns[idx].cmd_flags;
0
185 }-
186-
187 /* Shouldn't really be here ... */-
188 ENGINEerror(ENGINE_R_INTERNAL_LIST_ERROR);-
189 return -1;
never executed: return -1;
0
190}-
191-
192int-
193ENGINE_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void))-
194{-
195 int ctrl_exists, ref_exists;-
196-
197 if (e == NULL) {
e == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
198 ENGINEerror(ERR_R_PASSED_NULL_PARAMETER);-
199 return 0;
never executed: return 0;
0
200 }-
201 CRYPTO_w_lock(CRYPTO_LOCK_ENGINE);-
202 ref_exists = ((e->struct_ref > 0) ? 1 : 0);
(e->struct_ref > 0)Description
TRUEnever evaluated
FALSEnever evaluated
0
203 CRYPTO_w_unlock(CRYPTO_LOCK_ENGINE);-
204 ctrl_exists = ((e->ctrl == NULL) ? 0 : 1);
(e->ctrl == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
205 if (!ref_exists) {
!ref_existsDescription
TRUEnever evaluated
FALSEnever evaluated
0
206 ENGINEerror(ENGINE_R_NO_REFERENCE);-
207 return 0;
never executed: return 0;
0
208 }-
209 /* Intercept any "root-level" commands before trying to hand them on to-
210 * ctrl() handlers. */-
211 switch (cmd) {-
212 case ENGINE_CTRL_HAS_CTRL_FUNCTION:
never executed: case 10:
0
213 return ctrl_exists;
never executed: return ctrl_exists;
0
214 case ENGINE_CTRL_GET_FIRST_CMD_TYPE:
never executed: case 11:
0
215 case ENGINE_CTRL_GET_NEXT_CMD_TYPE:
never executed: case 12:
0
216 case ENGINE_CTRL_GET_CMD_FROM_NAME:
never executed: case 13:
0
217 case ENGINE_CTRL_GET_NAME_LEN_FROM_CMD:
never executed: case 14:
0
218 case ENGINE_CTRL_GET_NAME_FROM_CMD:
never executed: case 15:
0
219 case ENGINE_CTRL_GET_DESC_LEN_FROM_CMD:
never executed: case 16:
0
220 case ENGINE_CTRL_GET_DESC_FROM_CMD:
never executed: case 17:
0
221 case ENGINE_CTRL_GET_CMD_FLAGS:
never executed: case 18:
0
222 if (ctrl_exists && !(e->flags & ENGINE_FLAGS_MANUAL_CMD_CTRL))
ctrl_existsDescription
TRUEnever evaluated
FALSEnever evaluated
!(e->flags & (int)0x0002)Description
TRUEnever evaluated
FALSEnever evaluated
0
223 return int_ctrl_helper(e, cmd, i, p, f);
never executed: return int_ctrl_helper(e, cmd, i, p, f);
0
224 if (!ctrl_exists) {
!ctrl_existsDescription
TRUEnever evaluated
FALSEnever evaluated
0
225 ENGINEerror(ENGINE_R_NO_CONTROL_FUNCTION);-
226 /* For these cmd-related functions, failure is indicated-
227 * by a -1 return value (because 0 is used as a valid-
228 * return in some places). */-
229 return -1;
never executed: return -1;
0
230 }-
231 default:
code before this statement never executed: default:
never executed: default:
0
232 break;
never executed: break;
0
233 }-
234 /* Anything else requires a ctrl() handler to exist. */-
235 if (!ctrl_exists) {
!ctrl_existsDescription
TRUEnever evaluated
FALSEnever evaluated
0
236 ENGINEerror(ENGINE_R_NO_CONTROL_FUNCTION);-
237 return 0;
never executed: return 0;
0
238 }-
239 return e->ctrl(e, cmd, i, p, f);
never executed: return e->ctrl(e, cmd, i, p, f);
0
240}-
241-
242int-
243ENGINE_cmd_is_executable(ENGINE *e, int cmd)-
244{-
245 int flags;-
246-
247 if ((flags = ENGINE_ctrl(e, ENGINE_CTRL_GET_CMD_FLAGS, cmd,
(flags = ENGIN...id *)0) )) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
248 NULL, NULL)) < 0) {
(flags = ENGIN...id *)0) )) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
249 ENGINEerror(ENGINE_R_INVALID_CMD_NUMBER);-
250 return 0;
never executed: return 0;
0
251 }-
252 if (!(flags & ENGINE_CMD_FLAG_NO_INPUT) &&
!(flags & (uns...ed int)0x0004)Description
TRUEnever evaluated
FALSEnever evaluated
0
253 !(flags & ENGINE_CMD_FLAG_NUMERIC) &&
!(flags & (uns...ed int)0x0001)Description
TRUEnever evaluated
FALSEnever evaluated
0
254 !(flags & ENGINE_CMD_FLAG_STRING))
!(flags & (uns...ed int)0x0002)Description
TRUEnever evaluated
FALSEnever evaluated
0
255 return 0;
never executed: return 0;
0
256 return 1;
never executed: return 1;
0
257}-
258-
259int-
260ENGINE_ctrl_cmd(ENGINE *e, const char *cmd_name, long i, void *p,-
261 void (*f)(void), int cmd_optional)-
262{-
263 int num;-
264-
265 if ((e == NULL) || (cmd_name == NULL)) {
(e == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
(cmd_name == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
266 ENGINEerror(ERR_R_PASSED_NULL_PARAMETER);-
267 return 0;
never executed: return 0;
0
268 }-
269 if ((e->ctrl == NULL) ||
(e->ctrl == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
270 ((num = ENGINE_ctrl(e, ENGINE_CTRL_GET_CMD_FROM_NAME,
((num = ENGINE... *)0) )) <= 0)Description
TRUEnever evaluated
FALSEnever evaluated
0
271 0, (void *)cmd_name, NULL)) <= 0)) {
((num = ENGINE... *)0) )) <= 0)Description
TRUEnever evaluated
FALSEnever evaluated
0
272 /* If the command didn't *have* to be supported, we fake-
273 * success. This allows certain settings to be specified for-
274 * multiple ENGINEs and only require a change of ENGINE id-
275 * (without having to selectively apply settings). Eg. changing-
276 * from a hardware device back to the regular software ENGINE-
277 * without editing the config file, etc. */-
278 if (cmd_optional) {
cmd_optionalDescription
TRUEnever evaluated
FALSEnever evaluated
0
279 ERR_clear_error();-
280 return 1;
never executed: return 1;
0
281 }-
282 ENGINEerror(ENGINE_R_INVALID_CMD_NAME);-
283 return 0;
never executed: return 0;
0
284 }-
285-
286 /* Force the result of the control command to 0 or 1, for the reasons-
287 * mentioned before. */-
288 if (ENGINE_ctrl(e, num, i, p, f) > 0)
ENGINE_ctrl(e,..., i, p, f) > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
289 return 1;
never executed: return 1;
0
290-
291 return 0;
never executed: return 0;
0
292}-
293-
294int-
295ENGINE_ctrl_cmd_string(ENGINE *e, const char *cmd_name, const char *arg,-
296 int cmd_optional)-
297{-
298 int num, flags;-
299 long l;-
300 char *ptr;-
301-
302 if ((e == NULL) || (cmd_name == NULL)) {
(e == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
(cmd_name == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
303 ENGINEerror(ERR_R_PASSED_NULL_PARAMETER);-
304 return 0;
never executed: return 0;
0
305 }-
306 if ((e->ctrl == NULL) ||
(e->ctrl == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
307 ((num = ENGINE_ctrl(e, ENGINE_CTRL_GET_CMD_FROM_NAME, 0,
((num = ENGINE... *)0) )) <= 0)Description
TRUEnever evaluated
FALSEnever evaluated
0
308 (void *)cmd_name, NULL)) <= 0)) {
((num = ENGINE... *)0) )) <= 0)Description
TRUEnever evaluated
FALSEnever evaluated
0
309 /* If the command didn't *have* to be supported, we fake-
310 * success. This allows certain settings to be specified for-
311 * multiple ENGINEs and only require a change of ENGINE id-
312 * (without having to selectively apply settings). Eg. changing-
313 * from a hardware device back to the regular software ENGINE-
314 * without editing the config file, etc. */-
315 if (cmd_optional) {
cmd_optionalDescription
TRUEnever evaluated
FALSEnever evaluated
0
316 ERR_clear_error();-
317 return 1;
never executed: return 1;
0
318 }-
319 ENGINEerror(ENGINE_R_INVALID_CMD_NAME);-
320 return 0;
never executed: return 0;
0
321 }-
322 if (!ENGINE_cmd_is_executable(e, num)) {
!ENGINE_cmd_is...utable(e, num)Description
TRUEnever evaluated
FALSEnever evaluated
0
323 ENGINEerror(ENGINE_R_CMD_NOT_EXECUTABLE);-
324 return 0;
never executed: return 0;
0
325 }-
326 if ((flags = ENGINE_ctrl(e, ENGINE_CTRL_GET_CMD_FLAGS, num,
(flags = ENGIN...id *)0) )) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
327 NULL, NULL)) < 0) {
(flags = ENGIN...id *)0) )) < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
328 /* Shouldn't happen, given that ENGINE_cmd_is_executable()-
329 * returned success. */-
330 ENGINEerror(ENGINE_R_INTERNAL_LIST_ERROR);-
331 return 0;
never executed: return 0;
0
332 }-
333 /* If the command takes no input, there must be no input. And vice-
334 * versa. */-
335 if (flags & ENGINE_CMD_FLAG_NO_INPUT) {
flags & (unsigned int)0x0004Description
TRUEnever evaluated
FALSEnever evaluated
0
336 if (arg != NULL) {
arg != ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
337 ENGINEerror(ENGINE_R_COMMAND_TAKES_NO_INPUT);-
338 return 0;
never executed: return 0;
0
339 }-
340 /* We deliberately force the result of ENGINE_ctrl() to 0 or 1-
341 * rather than returning it as "return data". This is to ensure-
342 * usage of these commands is consistent across applications and-
343 * that certain applications don't understand it one way, and-
344 * others another. */-
345 if (ENGINE_ctrl(e, num, 0, (void *)arg, NULL) > 0)
ENGINE_ctrl(e,...oid *)0) ) > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
346 return 1;
never executed: return 1;
0
347 return 0;
never executed: return 0;
0
348 }-
349 /* So, we require input */-
350 if (arg == NULL) {
arg == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
351 ENGINEerror(ENGINE_R_COMMAND_TAKES_INPUT);-
352 return 0;
never executed: return 0;
0
353 }-
354 /* If it takes string input, that's easy */-
355 if (flags & ENGINE_CMD_FLAG_STRING) {
flags & (unsigned int)0x0002Description
TRUEnever evaluated
FALSEnever evaluated
0
356 /* Same explanation as above */-
357 if (ENGINE_ctrl(e, num, 0, (void *)arg, NULL) > 0)
ENGINE_ctrl(e,...oid *)0) ) > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
358 return 1;
never executed: return 1;
0
359 return 0;
never executed: return 0;
0
360 }-
361 /* If it doesn't take numeric either, then it is unsupported for use in-
362 * a config-setting situation, which is what this function is for. This-
363 * should never happen though, because ENGINE_cmd_is_executable() was-
364 * used. */-
365 if (!(flags & ENGINE_CMD_FLAG_NUMERIC)) {
!(flags & (uns...ed int)0x0001)Description
TRUEnever evaluated
FALSEnever evaluated
0
366 ENGINEerror(ENGINE_R_INTERNAL_LIST_ERROR);-
367 return 0;
never executed: return 0;
0
368 }-
369 l = strtol(arg, &ptr, 10);-
370 if ((arg == ptr) || (*ptr != '\0')) {
(arg == ptr)Description
TRUEnever evaluated
FALSEnever evaluated
(*ptr != '\0')Description
TRUEnever evaluated
FALSEnever evaluated
0
371 ENGINEerror(ENGINE_R_ARGUMENT_IS_NOT_A_NUMBER);-
372 return 0;
never executed: return 0;
0
373 }-
374 /* Force the result of the control command to 0 or 1, for the reasons-
375 * mentioned before. */-
376 if (ENGINE_ctrl(e, num, l, NULL, NULL) > 0)
ENGINE_ctrl(e,...oid *)0) ) > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
377 return 1;
never executed: return 1;
0
378 return 0;
never executed: return 0;
0
379}-
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